Right now, the main problem with Facebook's message feature is that it is only available to friends as you addressed. You won't want to unfriend somebody becau

Right now, the main problem with Facebook's message feature is that it is only available to friends as you addressed. You won't want to unfriend somebody because they post too much; if you unfriend, you also lose access to their photos, contact information, and it is also publicaly seen. Along with the new homepage layout, the most important feature Facebook is adding is the one way follow for celebrity figures. This is very important; it will allow regular users to see the benefits of an individual sharing things about their lives. I believe that Facebook is using these celebrity accounts to sell users on opening up and sharing more information. I expect one way follows to become open to all Facebook users in the future. Your Facebook account will have two sides: the public information sharing (Twitteresque chatter, links to articles, etc) and the entire profile. They have to tread carefully, however. Facebook's root is in allowing only those within your network or friend circle to view your information. It will take a dramatic shift in the user's view of their information. If they can succeed, however, I think that Twitter will not be sustainable in the long run.