ohh..if you have not already realised, sgforums is a super compendium of 300+ forums...
just click on the left side (All forums) then find those you interested in and join the chat.

Alternatively, most usually used buttons are actually "Newest Topics" which are the newests threads created, these recent threads which are not old thread, will normally be "hotter" and response is much faster.
You can also create your own thread topic, just goto any forums from "All forums", then from there, click "create" new topic and there you got it, you became a thread-starter.
