Sorry if it's annoying... we're going to run the ads as a test for a while, and if they work, we have plans to incorporate targeted eBay auction results to most of the forums.
I personally thought they would be among the most useful, relevant ads we run. Many websites run completely unrelated, generic ads that have no conceivable value to visitors. Our ads on the other hand, are almost always related and of course, support the operations of the site.
Since the other BNN sites have low traffic, the server costs are fairly small compared to those of TBN... plus, those sites support themselves with similar ads.