MyBB Community Forums

Hi,

I just want to know how to integrate 2 or 3 (4,5,6 and so on) forum.

User need to login in one of my forum and it will automatically login to all of my forum.

Let's say,

http://mybb.com - homepage

http://contact.mybb.com - contact us page.

Are they all going to be on the same domain?

Yes, they all will be in the same domain.
but page(forum) will create in subdomain.

Any ideas?

pavemen was working on something like this, not sure if he's going to continue working on it but you can check it out:
http://community.mybb.com/thread-71387.html

I'll also move this to mod requests since its going to have to be a mod