[pgt]

For those who don't know what VKontakte is (I didn't), it is the biggest social network after Facebook with "over 100 million active users" according to vk.com, which they own.

More information: http://en.wikipedia.org/wiki/VK_(social_network)

[guard-of-terra]

Perhaps China has a few bigger networks.

[001sky]

Minor nit, but your linked reference notes:

[VK] is 8th most popular social networking site in the world

http://www.ebizmba.com/articles/social-networking-websites

[This list itself may be open to question, however. See for example some major exclusions:

http://www.businessinsider.com/a-quick-guide-to-chinas-socia...]

[caractacus]

And it has an immense selection of music and video. I mean, positively incredible. Before Spotify swept up just about every single artist ever known to man, VK was the place to find recordings of even that obscure 80s band you saw down the New Cross tavern on a Tuesday night with seven other people and a dog. Better selection than Oink in its heyday. And if you're Russian, there's no reason to ever go anywhere else for film or television.