MyBB Community Forums

Tried the forum search and google and found a couple of threads conserning user database sharing but found no real solution.

Is there a solution to use the same user database for several forums?
E.g. you register to forum.domain.com.
You will be able to login to forum2.domain.com etc.

Is this what you're looking for?

http://community.mybb.com/thread-71387.html