The NY Times reported that Amazon is acquiring Shelfari, the social network for book lovers. This is a little surprising in that Amazon has a pretty good user-community already. I'm not sure what Shelfari brings to Amazon, though I'm sure it won't hurt. According to Compete.com Shelfari has over 170,000 unique visitors a month.
In Feb 2007 Amazon invested $1 million in Shelfari's Series A round.
NY Times Article
Shelfari's Web Site
Compete.com Stats for Shelfari versus LibraryThing
