Twitter Reverses Rally as Shares Dive

Shares of the microblogging site tumbled $9.56, or 13 percent, to $63.75.

Prismatic Social News App Overhauls for a Better Personal Interest Graph

It’s yet another social news app, but perhaps a smarter one.

Crowdtilt Collects a Quick $23M to Bring Crowdfunding All Over the World

“Only so many people have a $40,000 documentary they want to get funded,” says Crowdtilt CEO James Beshara. For everyone else — perhaps — there’s Crowdtilt.

N3twork Wants to Reshape Online Discussions Around Interests

It’s all about the hashtag.
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Putting the Self in Self-Expression: Rupal Patel Creates Personalized Prosthetic Voices

“Never heard me before.”

The Heartwarming Adventures of #SFBatkid and the Thrill of the Hunt for Carmen Sandiego

When done well, blending fiction with reality is one of those things that makes social media worth all the hype.

News Byte

Tech Firms Rally, Expecting Justice Department to Oppose Transparency Requests

Apple, Dropbox, Facebook, Google, Mozilla, Reddit, Tumblr, Twitter, Yahoo and other tech companies today sent a letter to the heads of the U.S. Senate and House Judiciary Committees in support of proposed legislation that would allow them to publish statistics about secret national security surveillance orders. The Center for Democracy & Technology, which organized the group, said the letter was timed to coincide with the U.S. Justice Department’s filing of a brief with the FISA court today opposing many of those companies’ requests to disclose information about when it asks them for user data.

AllThingsD in the Media: New iPhones, Twitter IPO, NSA Surveillance

Walt Mossberg reports live from Apple headquarters, Mike Isaac delves into Twitter’s cryptic IPO announcement, and Arik Hesseldahl decodes tech CEOs talking NSA.

Here Is Airbnb’s First Television Ad

If you catch me at the border, I got visas in my name.
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News Byte

Quora Hires Erin Teague to Lead Growth

Erin Teague, product manager for growth at Path, will take the same role at Quora. Teague has degrees in both engineering and business, and had also worked in product at Twitter. Growth at Quora had previously been run by Andrew Johns, now an entrepreneur-in-residence at Greylock Partners.

Tyra Banks Invests in Flixel, Will Feature Its “Living Photos” Prominently on “America’s Next Top Model”

This goes well beyond normal product placement.

I’m So Over Oversharing: On Making Our Digital Lives More Real

Pinterest Now Tracks Everybody by Default, but You Can Opt Out

ATD on the TV: Toasty Twitter, Amber Alerts, Dell and the NFL

Tech Companies Want Warrants for User Data Access

Quora CEO Adam D’Angelo: We’re Playing a Long-Term Game

Pinterest Makes Pins More Than Pretty Pictures

Fired SendGrid Developer Evangelist Adria Richards Speaks Out

Zendesk Hacker Accesses Twitter, Tumblr and Pinterest Data

No, I Don’t Want to Tell You About the Fastest Way to Lose Body Fat in Two Weeks

2012, The Year I Basically Stopped Using Apple’s iOS Apps

Evan Williams’s Advice to Start-Ups: Don’t Be Too Data-Driven

A Look at the 472 Private Tech Companies Currently Worth $100M or More (Slides)