If you are interested in stats, figures and graphs related to the social media world check out the research study by Universal McCann, Next thing now, Wave 3, Power to the people social media tracker.
80 page pdf: http://www.universalmccann.com/Assets/wave_3_20080403093750.pdf

Add SOCIAL MEDIA to the extensive list of services that Public Relations and strategic communication companies offer or should be offering in todays information age. Slowly, although nothing is slow in the online world, companies are starting to learn the potential and opportunities of social media. PR companies are starting to remodel their approach and [...]

The argument of quality over quantity on the online social networks: “Exclusivity trumps accessibility. Having thousands of friends becomes ’so 2008′ and defriending becomes the hot new trend, driven by overwhelming rivers of newsfeeds.” - Charlene Li, Altimeter Group
Peter Kim, former Forrester analyst predicts trends for social media in 2009 - Interesting stuff, worth the [...]