What would Facebook look like if it were actually secure, wasn't entrusted to just one company, and couldn't be taken away from us or changed at someone else's whim? We'd all be publishing our own social stream on our own servers, wherever we wanted, including statuses, photos, likes and dislikes. We would be running our own software that downloads and aggregates those streams from our friends, who have chosen to share their publishing details with us and allowed us access. Instead of building up one massive database of valuable personal data for one company, our data would remain our own. We could cut off someone's access and never let them back in.
Security would have to be built into this distributed social network publishing standard, along with strong encryption, because a distributed network like that is vulnerable to hijacking of individual nodes, but that's no different to individual Facebook accounts getting hacked. The only difference is that individuals, or the hosting companies they use, would be responsible for that security, rather than Facebook.
Mokalus of Borg
PS - This is like distributed social networking taken to the extreme.
PPS - It's the interaction of individual "social networks" of one person each.