What features would exist in an Anti-Social Network?

I have been joking about building the first anti-social network. Well, I'm bored this holiday (No stories to be dolled out at work until the 3rd), so I want to build an anti-social network.

So, some suggestions thus far:

• You are friended to everyone and you have to unfriend those you don't want to be friends with.
• Friends have access to only what you want to share with them, while non-friends can see everything (So stalker basically).
• When you un-friend a person, they have to give you permission to do so.

So, what else?

Just thought of another feature:

When you delete your account, it's made public so everyone can rip on you for taking the easy way out.

One more update:

Un-Friend is the name, un-friend.com. Yes, I am seriously going to build this, after thinking about it for a couple of years.

Last update:

I have started the project, and am basically making development very open so everyone can watch.

First: Pivotal, that's the pivotal tracker for it which is basically a planning board.

Secondly: Repo is the Github repo with the code

Third: If you ever get really, really, really, really bored I am going to stream a lot of the coding and planning online. That planning includes doing mockups.