[omh]

I think most people already solved this problem by joining Facebook.

Yes, it's obviously not quite the same thing. But it's a central place which (almost) everyone has joined. Many have listed their phone/email details, and if they haven't I can usually message them to ask.

[smilekzs]

Welcome to China.

[lifeisstillgood]

huh? is that china is just like this? or not?

[pinaceae]

facebook is blocked in china

[lifeisstillgood]

but the clone site does the same thing - presumably at the same penetration

[smilekzs]

Different networks partition the users, and the unnecessary extras "piggyback" on the essential service here -- managing list of contacts. China blocks FB due to the piggyback'd content -- the "keep in touch" part is collateral damage.