I am thinking of starting an "anti-social" network.
Here is the jist.
when you first sign up, we ask you a thousand personal questions. really obscure ones, like what kind of socks you like, does your toilet paper roll unravel from the top or bottom etc. We are right up front that we will sell all that info to anyone who will give us money for it, even if its a nickle from the paperboy.
Then once you finally get though all the data mining, you set up your "page" same as facebook, only EVERYONE can see everything. Your misssion is then to "un-friend" people as fast as you can. instead of giving a "poke", you can send a "finger" to other people. and every time someone new comes on, you have to "un-friend" them also. So locking down your page, becomes a full time chore.
The only way to "Win" is really no to sign up for the service in any way.
Advertising:
The actual profile page will only be 10% of the screen, the rest will be the most annoying flash ads and banner ads we can possibly sell like "punch the monkey". We will hire the "Bonzi Buddy" team to develop "Bonzi's cousin" a nice, lovable virus to heartwarming infect your system with "nice, heat-filled, malware"