Rafe Needleman's December 5 cnet post
Excerpt: PeopleBrowsr is a new service that can show you all your activity streams from various social sites and nanoblogs, like Twitter and Friendfeed. It also adds additional features to Twitter, such as grouping your contacts. It solves some real problems, but I found it clunky to use.
Tasha Saecker's December 5 Sites and Soundbytes post.
December 2 ReadWriteWeb post.
December 5 PR 2.0 post.
December 3 BetaNews post.