Facebook Groups vs. Facebook Pages
http://www.timdavies.org.uk/2008/02/18/facebook-groups-vs-facebook-pages/

Davies, Tim
Tim's Blog
2008

Abstract:

Many nonprofit early adopters of Facebook set up groups as their organizational hubs because that was the only option. Later, Facebook Pages were introduced and many nonprofits have set these up as their institutional hubs. There has been some discussion in nonprofit forums, blogs, and listservs about the pros and cons of Facebook Pages versus Groups. Below are the notes I've drafted on the topic so far.