If you can't get a domain name at this time it's VERY important that the title of your forum be correct.
You have "Rollinginitforum" and I'm not sure folks are going to find it by doing keyword specific searches. Maybe I should give you an example of what I am referring to:
On my forum here:
http://www.yoshi2me.com/ipw-web/bulletin/bb/index.php
If you do a search for "STD Message Board" you will easily find me on any of your favorite search engines. That's because I tried to encorporate an easily searched term into the title. This works well for those folks (like myself) that don't have any particular specialty domain. As you can see.. yoshi2me in the url means nothing to somebody that doesn't know what it is and is searching for information on STD's.
So back to your "Rollinginitforum" .. Maybe you want to use the phrase "Your Rolling In It Forum" as some sort of catch phrase to go underneath your title... At this point I'm not sure what Rollin' In It means... are you referring to rolling in money? Are you referring to rolling in the hay?
Do you see what I mean? In any case.. I'm just as new to this as you are so please take my opinion with a grain of salt. Just wanted to share what I think with you and then see what you think about that.
I can't really say anything about how many categories that you have because I have a whopping 37!!! lol
Oh and for those following this thread I would LOVE to get some constructive feedback on my forum. I'm always open to suggestions, ideas, and ways to improve what I'm already trying to do.
Thanks you guys!
Angela