Gripes with the way social networking is done

Havnt posted for a while but thought I would just keep this blog up to date.

Why is it all social networks are standard to deliver to everyone.  Why not as the initiator of a conversation you could bring people in when you needed to.  So you type something all your friends can see it and some people comment on it, could those comments not be hidden until you 'open' them up and bring them into a conversation?

Facebook - Social Ego Learning

Well ive just bought a facebook applications book and Im going to give it a try to build an application that tests students. The app will allow for students to show the facebook app on their profile with a grade. This will allow students to compete while learning about who has the highest 'Socio Grade' for their module for those that want it.

Im not to sure on what the impact that would have by allowing students to show their formattive grade to each other.

Anyways its an experiment, so Ill see how it goes.

Any suggestions ideas and feedback is welcome.