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 which has been controversial both inside and outside Time Warner, 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 the 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.