A company called
Weblo is helping Facebook members sell ads on their profile pages. This apparently is against the rules because Facebook doesn't want profile pages to become "a free-for-all.� As the article rightly points out, "Weblo gets to the heart of a question of ownership that will generate more debate as more people spend more of their time looking at content created by other ordinary people. When users post reviews of restaurants on a media site, for example, should they get to share in the ad revenues generated?"
It will be interesting to see how this plays out. I've thought for a while ad revenue sharing is a huge opportunity in the social networking space.