As part of its ongoing rejiggering of its social-networking offerings, AOL is formally rolling out its expected Lifestream platform today, with a new “timeline” depicting a user’s online life in a streaming horizontal calendar called a Lifestory. –A BoomTown post about new changes to the AOL social network, Bebo, Feb. 23, 2009

Yesterday, Facebook introduced another new look yesterday at an open house at its Palo Alto, Calif., HQ.

It’s yet another iteration of the social-networking giant–this time to make Facebook seem more active for its massively growing cadre of users, the count of which is heading quickly toward the 200 million mark.

Much of the analysis centered around how Facebook was trying desperately to mimic Twitter, especially since Zuckerberg said in a blog post that it was (without naming Twitter, which it had tried to buy):

“This creates a continuous stream of information that delivers a deeper understanding for everyone participating in it. As this happens, people will no longer come to Facebook to consume a particular piece or type of content, but to consume and participate in the stream itself.”

Frankly, it’s no big deal if Facebook copies Twitter or whatever is popular out there. After all, with the big numbers it’s putting up on the board in terms of audience, it’s hard to stay as innovative, as much as be a fast follower to those who are nimbler or need to be bold.

As the old business bromide goes: The plains are covered with the bodies of pioneers.

Actually, to my mind, the new look of Facebook also resembles in look and in name even the more recent launch of Time Warner (TWX) online unit’s AOL Bebo service.

Ah, poor AOL! Even when it is actually innovating–make no mistake, its new version of Bebo is really quite interesting–it’s likely to be an upward battle to gain any traction.

But, at least, Zuckerberg is an admirer.

As part of its ongoing rejiggering of its social-networking offerings, AOL is formally rolling out its expected Lifestream platform today, with a new “timeline” depicting a user’s online life in a streaming horizontal calendar called a Lifestory.

(See image above; click on it to make it larger.)

The moves are the latest made by AOL’s People Networks related to its Bebo social site, which this column previously reported about in December.

AOL is hoping its efforts will focus users more on Bebo, which it bought for $850 million in March, a high price that has been controversial both inside and outside Time Warner (TWX), which owns AOL.

While Bebo is one of the larger social networks, it is still not popular in the U.S. and lags well behind leaders like Facebook.

Lifestream will first be available on AOL’s Bebo and include updates from friends on Facebook, Myspace, YouTube, Flickr, Twitter and Del.icio.us. Lifestream can also be used by brands, celebrities, bands and companies.

Lifestory uses a zooming technology to look at various times, using text, music, videos and photos, and can be done with many contributors. It also includes a feature called Social Slider that allows a user to have more granular filtering control over who sees what in Lifestory.

AOL had previously launched other social-networking features, such as Social Inbox, a one-stop destination with aggregated social feeds from across the Web, multiple email accounts and media recommendations.

AOL also has an upcoming service called Site Social, with plans to use its advertising platform to help monetize the offering.

Many large Web portals like AOL have recently rolled out by large Web players like Microsoft (MSFT) and Yahoo (YHOO). All are attempts to offer a competing product to the most popular social-networking sites, Facebook and the News Corp. (NWS) unit, MySpace, where users have flocked. (News Corp. is the owner of this Web site.)

Those two companies have also been making moves of late to allow consumers to aggregate their disparate piles of online information through connective offerings that allow them to pool all kinds of Web content and communications in one place.

AOL’s People Networks unit, which includes Bebo, AIM and ICQ, has an overall audience of 92 million, according to a recent comScore (SCOR) survey.

Here are some screenshots of the AOL pages with the new features:

Moviefone Lifestory

VH1 Lifestory

Social Inbox

User Profile

User Profile 2