MySpace Plaxo Social Bookmarking Twitter 
Techipedia: Tamar Weinberg
APRIL 10, 2008
That is, of course, if your friends are using Twitter. Since FriendFeed aggregates numerous social networks, it can give you a lot more information about its users, especially with regards to how and when they engage with online content. FriendFeed takes this idea and goes a step further. It’s a great system … in theory.
Buzz Marketing for Technology
JUNE 27, 2008
Don’t forget the conversations hiding in Twitter (use Summize.com) and Friendfeed. Twitter.com is a must if you have a social media audience. Facebook and/or MySpace are useful social networks where you can build outposts (see next list). account for social bookmarking. Take a second look at Plaxo.
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