As most of you know by now, Facebook just rolled out a new ad system where peoples´s updates get converted into “sponsored story” ads fed to their friends. I believe people will actually compete to become part of them down the road. And look out for brands finding ways to reward influencers within your network on different levels. Read more about it from more intelligent people than me:
http://rushkoff.com/2011/01/28/the-facebook-panopticon/
http://arstechnica.com/web/news/2011/01/no-opting-out-from-facebook-turning-your-check-ins-likes-into-ads.ars
http://io9.com/5745369/what-happens-when-advertisers-try-to-control-your-mind
http://www.facebook.com/help/?page=18921
http://money.cnn.com/2011/01/26/technology/facebook_sponsored_stories/index.htm