Just a suggestion. Take a look at r3vlimited.com and speak to the owner. They only have one nonintrusive ad at the top right. The large majority of the companies that have ads on there are ones that sell strictly e30 products, the rest cater to BMWs in general. I'd venture to say that r3v has more active members, many many subforums(which the FAQ desperately lacks), a fully functioning PM system AND individual member galleries with 100mb personal space. All this paid for by the one ad, little if any comes out of the owner's pocket I believe.
I love the FAQ and it has been invaluable to all of us but just because our cars are from the 70s doesn't mean our forum needs to look and act like it is too.