Okay (it would be easier to write in german, but maybe other users have this question as well).
So, I mean different forum areas, for example at
http://www.vbulletin.com/forum/forum.php:
vBulletin Announcements,
vBulletin Sales and Feedback,
vBulletin 4 and so on...
Or also sub-categories like
vBulletin Announcements,
vBulletin Developer Chat Forum...
Whatever...
Important is for me, that I can differentiate the given points in defined forum areas...