What Are Some Good International Social Networking Sites?

I’m looking for some good international social networking sites (social networking sites that are particularly designed for international friendships / penpals), but not as big as Interpals, LiveJournal or Myspace. Preferably an international social networking site more known in East or South Asia, rather then what is most known in the states. Like Mixi, for example – But open to foreigners.
Thanks.

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