Hi!
My brother participates in this group, MEETin, in his hometown. It's a way to meet up with other people, who would like to meet others outside their current social circle. Not for business - just to have fun (and not meant to be a pick-up scene either).

The powers that be at MEETin just created a Hong Kong group. Check it out. Let's get this thing going!

http://www.meetin.org/city/MEETinHONGKONG/index.cfm

I know a lot of you organise things on Geoexpat. MEETin helps to put a little structure into the events - including emailing you when you events are posted (can't get that to my knowledge on Geoexpat unless it's in the same thread). And it wouldn't hurt to cross-post events, would it?