[ajsnigrutin]

Google + solved this issue with 'circles' or whatever it was called.

For me, facebook died when they replaced the user generated content with random garbage and links. Same with instagram, when photos of sunsets and plates of food turned to random videos of people I don't know.

The total number of people on the site never mattered to me, the user content getting replaced with random stuff made it.. well.. "unsocial", and we had other sites for that (digg->reddit, stumbleupon etc.)