If you read Robert Scoble’s blog you know about his problems with Facebook today. He ran a script on Plaxo to import his Facebook friends. Facebook’s system detected the script and blocked his account on the basis that it violated the Facebook terms of service. When he explained what happened they reinstated his account and asked him not to run such scripts in the future.
Bottom line: Facebook locks up user data. Not only do they not provide an API, they get really testy about outside software that reads the data. With this attitude, I have serious doubts about whether Facebook can have a central role in our Internet Campus.