The best social media marketing. | From The Head Of Zeus Jones
http://www.zeusjones.com/blog/2009/the-best-social-media-marketing/

airly lengthy process of weeding through hundreds upon hundreds of examples of social media marketing done by companies to find the best for a client presentation. It was tedious beyond belief because there’s actually quite a lot of crap. I’m guessing there’s probably a similar search or two going on out there at the moment, so I thought I’d share our best of list, You may not agree but at least it might save you some time.

Interesting review of a range of sites which utilise social networking - often for marketing