We get lots of posters asking about Forumosa-type forums in Shanghai, Korea, etc. so please add to this list if you know of any.
Ditto for Singapore.
Mainly for Brits http://www.britishexpats.com :UK:
HK Expats: hkexpats.com/
There's another thread about the same topic although the focus is just on Asia here: forumosa.com/taiwan/viewtopic.php?t=28847
India: officially a travel forum, but looks quite expattish to me: indiamike.com
Italy: a forum mostly populated by US and UK expats: expattalk.com
Researching a possible move to Hong Kong, I found many.
But the first two (below) seem to be the best – packed with good info, good forums, and not overly commercial.
Not quite a forum, but quite useful anyway
Tainan - groups.yahoo.com/group/Tainan_bulletin/
www.alloexpat.com has forums for most Asian countries, though those about places like Bangla Desh are obviously not brimming with posters. I stumbled upon the forum while looking for information about Vietnam: