uh, imageboards are a type of forum too
but to answer your question, they probably just want to post their epic intpol memes about other people's nationality
there's also the pseudo-identity factor if you're the only poster from your country for that extra bit of epicness
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/uta/ (ultimate ota) coming soon.
Listed as OTA in the Nikkei index.
Also 3D Makisoft sound compatible and HD text.
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Please excuse my poor English not enough otacoin to start a thread