That's a cool idea.

Does anyone know of any projects in this direction?

I remember one for Facebook that, because you couldn't delete your account, would systematically edit and wreck every single bit of data it could touch, replacing it with random junk.

I've also seen some that register you for sites by feeding in random demographic data.

Someone should make a virus out of that, destroy the social network from the inside and watch everyone crying over their phones.