Depends on what your target market is and your forum's attributes/differentiators. If you were creating something for, say, "green" advertising, then that would be a totally different name than a forum for advertising in the gambling world. If you provide some of that info, it'd be easier to help generate a name for you.
It's going to be an advertising forum. The type of advertising forum that other forums can advertise on. That's the type of forum.
I registered one yesterday which will go live on monday or tuesday http://www.free-ads-forum.com i thought it was well cool.
well i no a site forumadvertizer.com that is very popular so I would go there maybe learn a thing or two and you could maybe get a domain similar to that.
Will your traffic be from a particular place? Because I know your other site, Get A Link, possessed users mostly from InvisionFree.