I suppose the other thing to mention to is that this is not run as a business, it's generally run on the goodwill of people with an interest in cars for the benefit of people with an interest in cars. That's not to say down the line the organizers might sell out when they decide they have no more time or interest in running it and rather than kill the forum they'll sell it on, nothing wrong with that. Right now they are here for the genuine interest in cars.
There are a few sponsors that help prop up the costs in return for advertising their services and wares to a targeted audience. The team need to be mindful of this to, its not a good idea if others were seen to get a "free ride" in the classified section.
Don't be disheartened about the site by this rejection of your advert, there's lots of interesting discussions, helpful DIYs and occasional meets where you can talk BMW and cars till your hearts content. The blocking of the advert here is just to maintain the community element of it. I think there is a way to pay for an advert here too if you're not an established member, maybe look in to that?
