For one thing, the Microsoft (MSFT) device is a booklet, not a tablet; in other words, it’s designed to fold. For another, it supports input via multitouch and, in an ironic nod to Apple’s Newton, stylus.

From Gizmodo, which somehow managed to uncover a bevy of information about the device:

“The Courier user experience presented here is almost the exact opposite of what everyone expects the Apple tablet to be, a kung fu eagle claw to Apple’s tiger style. It’s complex: Two screens, a mashup of a pen-dominated interface with several types of multitouch finger gestures, and multiple graphically complex themes, modes and applications. (Our favorite UI bit? The hinge doubles as a ‘pocket’ to hold items you want move from one page to another.) Microsoft’s tablet heritage is digital ink-oriented, and this interface, while unlike anything we’ve seen before, clearly draws from that, its work with the Surface touch computer and even the Zune HD.”

For instance, BoomTown was in Rome earlier this week attending a conference on business, brand and innovation that happens only once every seven years–and one of the biggest takeaways? Hardly any Italians have heard of Twitter, and those who have don’t really use it. Well, that, and conversations with Arianna Huffington, Reid Hoffman, and several Italian business leaders. Mark Zuckerberg, though, is most definitely plugged into the white-hot microblogging service. This week, he used his Twitter account, plus an appearance on “Oprah,” as a platform to herald the launch of Facebook’s own Twitteresque homepage redesign. In other news, Time Warner (TWX) CEO Jeff Bewkes laid off AOL President and COO Ron Grant and Chairman and CEO Randy Falco. BoomTown interviewed Falco’s replacement, Google (GOOG) ad sales exec Tim Armstrong, who’ll start at AOL as Chairman and CEO on April 7.

MediaMemo had the full memo from Time Warner on the Falco/Grant-Armstrong transition and also spoke with Boxee CEO Avner Ronen this week. Boxee is the start-up that lets you watch Web video on your TV, basically bypassing your cable box. Which is probably why it’s caught up in a cat-and-mouse game with Hulu, the joint venture between GE’s (GE) NBC and News Corp.’s (NWS) Fox that would much rather have you watch TV on the Internet instead. Guess who’s the mouse? Still, Hulu is down two networks, ABC and CBS (CBS)–though presumably, the aim is to offer all three. (News Corp. is the owner of Dow Jones, which owns this Web site.) MediaMemo also noted that Google rolled out its behavioral targeting functionality this week and points out that we all might be hearing a lot more from a man named Rick Boucher in the near future as a result.

Behavioral targeting wasn’t the only thing that Google rolled out this week–it also launched Google Voice, the initiative based on the company’s acquisition of voice communications start-up GrandCentral. Digital Daily covered the story. Elsewhere in the telecom world, major Palm (PALM) investor Roger McNamee made some bold (read: crazy) assertions about iPhone users switching en masse to the Pre, which later needed to be clarified (read: backed away from) by Palm itself. RBC analyst Mike Abramsky is also bullish on the Pre and its WebOS, but in a less crazy way. He gave it a glowing write-up on Friday. For a product that hasn’t yet been given a price or a launch date, it’s certainly building itself some high expectations. Of course, it’ll need to fulfill them to compete with the ever-evolving iPhone, which for which Apple (AAPL) is having a press event Tuesday to announce version 3.0 of the device’s OS.

Walt Mossberg reviewed the new version of Apple’s ever-evolving iPod Shuffle this week, which has the distinction of being the first mp3 player to “speak.” His verdict was in Wednesday’s Personal Technology column. In Mossberg’s Mailbox, Walt answered questions about using a stylus with the iPhone and offered an explanation on how to change Apple’s Safari 4 beta so that it looks and works more like the previous version. And in this week’s Mossberg Solution, Katie Boehret took a look at iSkoot’s Notifier, an app designed to endow basic cellphones with smartphone-like capabilities.

More next week. And beware the Ides of March. Or not.

For instance, BoomTown was in Rome earlier this week attending a conference on business, brand and innovation that happens only once every seven years–and one of the biggest takeaways? Hardly any Italians have heard of Twitter, and those who have don’t really use it. Well, that, and conversations with Arianna Huffington, Reid Hoffman, and several Italian business leaders. Mark Zuckerberg, though, is most definitely plugged into the white-hot microblogging service. This week, he used his Twitter account, plus an appearance on “Oprah,” as a platform to herald the launch of Facebook’s own Twitteresque homepage redesign. In other news, Time Warner (TWX) CEO Jeff Bewkes laid off AOL President and COO Ron Grant and Chairman and CEO Randy Falco. BoomTown interviewed Falco’s replacement, Google (GOOG) ad sales exec Tim Armstrong, who’ll start at AOL as Chairman and CEO on April 7.

MediaMemo had the full memo from Time Warner on the Falco/Grant-Armstrong transition and also spoke with Boxee CEO Avner Ronen this week. Boxee is the start-up that lets you watch Web video on your TV, basically bypassing your cable box. Which is probably why it’s caught up in a cat-and-mouse game with Hulu, the joint venture between GE’s (GE) NBC and News Corp.’s (NWS) Fox that would much rather have you watch TV on the Internet instead. Guess who’s the mouse? Still, Hulu is down two networks, ABC and CBS (CBS)–though presumably, the aim is to offer all three. (News Corp. is the owner of Dow Jones, which owns this Web site.) MediaMemo also noted that Google rolled out its behavioral targeting functionality this week and points out that we all might be hearing a lot more from a man named Rick Boucher in the near future as a result.

Behavioral targeting wasn’t the only thing that Google rolled out this week–it also launched Google Voice, the initiative based on the company’s acquisition of voice communications start-up GrandCentral. Digital Daily covered the story. Elsewhere in the telecom world, major Palm (PALM) investor Roger McNamee made some bold (read: crazy) assertions about iPhone users switching en masse to the Pre, which later needed to be clarified (read: backed away from) by Palm itself. RBC analyst Mike Abramsky is also bullish on the Pre and its WebOS, but in a less crazy way. He gave it a glowing write-up on Friday. For a product that hasn’t yet been given a price or a launch date, it’s certainly building itself some high expectations. Of course, it’ll need to fulfill them to compete with the ever-evolving iPhone, which for which Apple (AAPL) is having a press event Tuesday to announce version 3.0 of the device’s OS.

Walt Mossberg reviewed the new version of Apple’s ever-evolving iPod Shuffle this week, which has the distinction of being the first mp3 player to “speak.” His verdict was in Wednesday’s Personal Technology column. In Mossberg’s Mailbox, Walt answered questions about using a stylus with the iPhone and offered an explanation on how to change Apple’s Safari 4 beta so that it looks and works more like the previous version. And in this week’s Mossberg Solution, Katie Boehret took a look at iSkoot’s Notifier, an app designed to endow basic cellphones with smartphone-like capabilities.

More next week. And beware the Ides of March. Or not.

I am a Palm Treo user and would like to get an iPhone for the apps. But I have tried the virtual keyboard on the iPhone in the store and hate it. Is there a stylus you can use for better accuracy, or some software trick?

I don’t know if they improve accuracy, but there are several stylus brands made for the iPhone and iPod Touch. They are aimed at making typing easier, especially if you have long nails or are wearing gloves. One example is the Pogo, a $15 iPhone stylus from a company called Ten One Design, at tenonedesign.com.

In addition, there are several iPhone apps that attempt to help typing accuracy by allowing you to compose emails, text messages and Twitter posts using a wide, landscape keyboard rather than the narrower standard keyboard. You type your message in these apps, and then the app sends them to the iPhone’s email program for transmission. One that I have used is called TouchType. It works with email and Twitter, and costs 99 cents.

Another interesting solution is a free app called ShapeWriter, which lets you type by sliding your finger along a keyboard to connect the letters in words. You never have to lift your finger until you are done with a whole word. Messages you compose in ShapeWriter can be saved as notes or shipped to the email program for sending.

Finally, I should note two things about typing on an iPhone. First, it’s difficult to know if you’ll be comfortable with it from just a few minutes in a store, because it usually takes a few days to master. Second, some people won’t ever find it acceptable, and these folks should choose a phone that has a physical keyboard.

In your review of the new version of the Safari Web browser, you said some Web sites were publishing methods for undoing some of the changes in it that you criticized. Can you explain how I can do that?

There are two methods for changing Safari 4 so it looks and works more like the previous versions, while retaining its faster speed. One method involves typing techie commands into the computer. But, for mainstream users, I recommend another: downloading a new free utility called Safari 4 Buddy. It’s available at swoon.net/site/software.html.

Safari 4 Buddy allows you to just check off buttons that can change the placement of tabs in Safari 4 so they’re under the toolbars, rather than at the top of the screen, and restore the blue page-loading progress bar that Apple killed. It also permits users to change other settings Apple omitted from the browser’s Preferences menus. I have tested it and it works.

However, this utility works only on the Mac version of Safari 4. I don’t know of any way to make these changes in the Windows version. Also, there’s no guarantee that Apple won’t make future modifications to the browser that might reverse any customizations Safari 4 Buddy makes.

• You can find Mossberg’s Mailbox, and my other columns, online free of charge at the new All Things Digital Web site, http://walt.allthingsd.com.

I bought an iPhone and was frustrated that my fingers appear to be too large to type properly on its virtual keyboard. Is there a stylus that works with the iPhone?

I hadn’t realized this until recently, when a friend who bought one showed it to me, but, yes, there is. The iPhone wasn’t designed to operate with a stylus, and the small, thin, hard kind that one uses with, say, a Treo, doesn’t work right with the iPhone. But there are some companies that sell a wider type of stylus with a soft tip that approximates a small fingertip, and is designed for the iPhone.

If you type “iPhone stylus” into a search engine, or an online store like Amazon.com, you will see a number of inexpensive choices. One downside: the iPhone doesn’t have a built-in slot for a stylus. My friend carries his, which has a clip on the end, like a pen, in his pocket.

I just purchased an external hard drive for my PC that connects through a USB port to back up photos and important files in the event of a computer crash. Would this hard drive be affected if my main hard drive crashed? Should I disconnect the external drive when it’s not in use?

The two hard disks are separate devices, and if one has a mechanical failure, it doesn’t affect the other. There might be some scenarios in which a problem with the computer itself, as opposed to a breakdown of its internal hard disk, could affect the external drive. And malicious software could corrupt or erase files on the external drive. An electrical surge could also affect both drives, or fry the computer itself.

Many people can’t disconnect their external drives, because they use automated backup programs, or frequently save files to the drives. If you are doing only occasional manual backups, you could disconnect the extra drive when not in use, so you’d feel more comfortable. But, for maximum peace of mind in case of an electrical surge, you should disconnect it not only from the PC, but from the electrical outlet as well, even if you are using a surge protector.

You can find Mossberg’s Mailbox and my other columns online free at the All Things Digital Web site, http://walt.allthingsd.com.

Write to Walter S. Mossberg at mossberg@wsj.com

One welcome sign is an effort by companies trying to improve Microsoft Corp.’s (MSFT) Windows Mobile operating system, which has a reputation for confusing navigation and hasn’t had a major update recently. Kinoma Inc., for example, recently released an application called Kinoma Play that runs on Windows Mobile devices and gives users a markedly better way of handling photos, videos, music and Web browsing.

The HTC Touch Diamond, due out this month from Sprint, tries to hide Windows Mobile software.

This week, I tried yet another software program that is designed to run on top of Windows Mobile software. But this time, the software is at the heart of a device designed by the same company: HTC Inc. I tested the HTC Touch Diamond, due out from Sprint (S) sometime this month for $250 (after a $100 mail-in rebate) with a two-year contract.

Taiwan-based HTC started out in 1998 as a maker and designer of mobile devices for other companies. A year ago, HTC launched the first device under its own name in the U.S., and now, Sprint, AT&T (T) and T-Mobile (DT) sell HTC-branded devices. The Diamond incorporates HTC software, as well as software from Sprint, MobiTV, TeleNav and others. But it isn’t a stretch to imagine HTC trying to create a fully end-to-end model (hardware and all software) in the future.

The Diamond has a touch screen, but it’s smaller than Apple’s (AAPL) iPhone — 2.8 versus 3.5 inches. This screen lacks the iPhone’s multitouch functionality, and its smaller size robs space used for touch gestures like flicking or scrolling with a finger. Yet like the iPhone, it relies solely on an on-screen keyboard for all text entries. Even with the Diamond’s stylus, the keyboard felt small and cramped. Using just your fingertips was next to impossible.

After using the Diamond for a week, I can say that despite its handsome TouchFLO 3D software and animated icons like photos that flip from one to the next with a flick of finger, this device failed to disguise the frustrating interface of Windows Mobile often enough for my taste.

It reminded me of the brown paper bag book covers my Dad helped me make for schoolbooks when I was a kid: They looked great on the outside, felt sturdy and clean and created a blank canvas for homemade doodles that were often more interesting to me than the books they covered. But my book covers couldn’t change what was underneath; pages of frustrating algebra were just a flip away.

HTC’s sleek software tries to hide Windows Mobile, but menus from the Microsoft operating system are constantly popping up. HTC’s email program, for example, is represented by an animated envelope icon that, when selected, cleverly flips twice before sliding an email message half-way out and giving you a three-line peek at what’s inside. If only reading and responding to email were half as entertaining. Selecting the animated envelope opens the old, cumbersome Windows Mobile email program.

Also, the touch capabilities of the Diamond’s screen didn’t work as well as they should. Finger flicks that should have scrolled through lists instead seemed to select individual items in a list, as if they were sticky.

The Diamond isn’t all bad, of course. Plenty of people will like its smaller size because the iPhone and RIM’s (RIM) BlackBerrys seem too large and brick-like to hold up to an ear for phone calls. Next to my BlackBerry Curve, the Diamond was of comparable thickness but measured smaller in width and length.

Despite its size, the Diamond is packed with features. It has a 3.2-megapixel camera with autofocus that doubles as a camcorder, and comes with four gigabytes of internal memory and a removable battery. I taped short videos — something the iPhone can’t do — and found the sound and video footage to be adequate.

HTC touts the Diamond’s browser, which is based on the Opera browsing engine but is designed for HTC. It opens Web pages in views that fit the screen and text is automatically resized as users zoom in or out, though this resizing was sometimes slow.

Unlike the iPhone, Web sites that are opened on the Diamond’s browser don’t resemble the actual site as you would see it on your computer. I opened CNN.com (TWX) and WSJ.com (NWS), two sites that are packed with text and graphics on a regular browser. On the Diamond, they quickly were rendered in list format with mostly text-only. I easily touched the screen to follow links to full stories.

Like the iPhone, the Diamond has an accelerometer, though it’s called the “G-Sensor.” When it worked, this feature flipped the screen to match the horizontal or vertical direction in which the device was being held. Photos flipped instantly, but the Diamond’s G-Sensor took almost three full seconds to respond as I flipped from vertical to horizontal while using the browser. And some Web sites didn’t respond to the G-Sensor flips at all.

A special YouTube application developed by HTC was easy to find on the device and worked quickly. My videos were organized into categories for All, History, Bookmarks and Search, though this last category required using the finger-fumbling keyboard. In one step, I emailed a link from a YouTube video to a friend using the device, with a still shot from the video included in the message.

Overall navigation on the Diamond isn’t as intuitive as on the iPhone or iPod Touch, nor was it as easy as on a touch-screen Windows Mobile device running the Kinoma Play application. The iPhone and iPod Touch use quick double-taps on touch screens to zoom in or out, and multitouch capabilities resize images with pinching gestures; Kinoma Play uses a long touch to zoom in. The Diamond used double tapping on some screens, but not enough for me to grow comfortably reliant on it. A small, circular pad beneath the device’s touch screen provided a more dependable method for zooming in or out of screens: tracing the perimeter of this circle clockwise with a finger zoomed in; counterclockwise zoomed out.

The HTC’s software animation is put to good use on its Weather screen. Here, animated illustrations of each day’s weather appear on the screen: suns spin, clouds move in, rain appears to fall. Even moons appear on the device at night to accurately reflect the weather in a city at a specific time.

It is exciting to think about other mobile-phone companies giving better software a real try, especially those that attempt to improve Windows Mobile. But HTC’s Touch Diamond doesn’t hide the outdated operating system well enough or often enough for a user to want to buy a whole new mobile device.

Edited by Walter S. Mossberg

• Email us at mossbergsolution@wsj.com. Find this and other columns and videos online free at the All Things Digital Web site: http://walt.allthingsd.com

This week, we took a look at three pocket-size models that will hit shelves next month. They are the Olympus Stylus 710 and the Nikon Coolpix S5, each $350, and the $400 Canon PowerShot SD630.

These cameras are impressively svelte. All three are less than four inches in length, a little more than two inches wide and only four-fifths of an inch thick. The Olympus weighs in at just 3.6 ounces, the Nikon at 4.8 ounces and the Canon at 5.11 ounces.

Yet they all have plenty of power to take very good pictures. The Nikon and the Canon boast a maximum resolution of six megapixels, while the Olympus can reach 7.1 megapixels. That means all three can take images that can fill a large, high-resolution computer screen or be blown up to large sizes when printed. Each has a 3X optical zoom.

The Nikon and the Olympus, which feature curved or tapered bodies, have 2½-inch screens. The Canon, which is squarer, squeezes in a three-inch screen. In our tests, all the screens remained usable, if somewhat washed out, in bright sunlight. But only one of the cameras, the Olympus, has any form of image stabilization, which can prevent blurring of photos caused by a slight shaking of the camera when holding it at arm’s length to frame a shot using the screen.

Two of the three models, the Nikon and the Canon, offered iPod-like navigation controls: dials or wheels that scrolled through menus and photos. The Nikon S5′s wheel has tiny ridged marks for easier turning and can also be pressed down in three places. Canon calls the SD630′s wheel a touch control dial — it doesn’t physically turn but instead comes to life when your thumb rests on it, displaying an on-screen icon of the dial and its functions.

We tested the three cameras indoors and out, at parks and shops and in houses and offices. We found all three easy to use and got good pictures from each. But we preferred the photos from the Canon and Nikon to those from the Olympus. The Olympus seemed weaker at handling dark areas and shadows in our outdoor tests, and its indoor flash pictures were too washed out. The Canon and Nikon pictures seemed about equal outdoors, but the Canon was slightly better at indoor flash shots.

Overall, we preferred the Canon. In addition to its superior pictures and larger screen, the Canon had a much cleaner user interface than the others. Many things about the Canon felt more like a tiny computer than a digital camera. Selecting an option, such as no flash, automatically moved that icon from the center to the edge of your screen. And when the touch control dial was used, the function upon which your thumb was hovering would suddenly be magnified on the viewing screen.

Also, when viewing images in playback mode, the Canon automatically rotates them if you merely turn the camera vertically or horizontally.

Our first impression of using the Nikon Coolpix S5 was how quiet it was. It turns on almost unnoticeably and zooms in and out without much sound at all — quite a switch from the typical whir of most zoom lenses. Unlike the Canon and Olympus lenses, the S5′s lens doesn’t protrude from the camera, even when zooming.

A special portrait button is positioned on the top ridge of the Coolpix S5 so that whenever you’re taking pictures of people, which happens often, you can press that button and automatically set the camera for the best portrait results. A Mode button on the back of the camera generates a circular on-screen image labeled with eight different modes, and the scroll wheel easily navigates around these options.

The Nikon also has some nice features, including a special setting that can combine 10 of your pictures into a little movie, complete with music. Unfortunately, you can’t play back these movies on a computer — they only play on the camera itself or on a TV using included AV wires. Nikon also provides an adapter that allows the S5 to dock with Kodak’s EasyShare printers. But, in our tests, the Kodak printer couldn’t locate the pictures stored in the Nikon.

One big downside of the Nikon: It’s the only camera in this group that requires a cradle to connect to a computer or TV. The others can be connected from ports right on the camera body.

The Olympus Stylus 710 has the best combination of specs and weight among the three. For instance, in its continuous-shooting mode, it can take 3.7 frames per second, versus a bit more than two frames for the other cameras.

But its user interface seemed old and clumsy, and its picture quality fell short in our tests. Also, the Olympus uses the oddball xD storage cards, rather than the more common SD cards found in the Canon and the Nikon.

The Stylus 710 offers 23 different scene modes, including such specifics as Night + Portrait, Self Portrait, Fireworks and Cuisine. But we were dubious about who would take the time to choose the correct scene setting before taking a picture. We tested a few of these scene-specific settings, including one called Night Scene, but we waited a full five seconds for our photo to appear on the screen after it was captured. When it was displayed, it looked blurry.

Without a clever scroll wheel, like those found on the Nikon and Canon, the Olympus was more of a pain to use. For example, when we looked through the 23 scene options, we had to press down the control arrow 23 times. Scrolling would have been nicer.

Each of these cameras has its strengths, but we like the Canon SD630 best in this group, followed closely by the Nikon Coolpix S5.

• Email: MossbergSolution@wsj.com