Lifestream is an independent social network integrating all of the other social networks you are likely to use daily. Introduced last fall, there are now nearly 2 million users. So now, the company is launching it as a standalone product. Lifestream pulls together social networks like Facebook, Twitter, MySpace, Foursquare, Delicious, Digg, Flickr and YouTube, allowing you to see your friends' content on all of these sites. Filter out content from specific networks if you like and publish only to certain networks if you choose. Your Lifestream status updates can be posted back to Facebook, Myspace and/or Twitter. Plus, you can conveniently sign through your phone and use your Facebook account, so there's no extra information to remember.
Read more at Tech Crunch.