I didn't delete my facebook. I unfriended everyone I knew. Took screenshots of the first pictures I saw when you googled my name as my pictures, then added random friends in other states I didn't know (not before re-filling all my data with fake data). Screw you facebook!
The reason why bitcoin is so popular is because it's a "protocol" and not a specific implementation. If there was really going to be a distributed social network, it shouldn't require downloading anything at all.
Maybe instead, we can use a some already agreed upon protocol... like... english language!