I would really like to be able to tie multiple vbulletin based websites together allowing users to have one login. I've seen bridges for vb to cms apps and I would have to think that vb to vb would be the easiest of all to do.
The reason this wouldnt be that easy, is because yes you *could* use the same database, but the problem is if you do that, then the settings are the same. Which means the board url is the same, which makes it worthless then, because its running only 1 then.