As a fellow web developer (with -0- affiliation to any hybrid websites), I can say the answer is pretty much a "No" to that, although once an ad has been identified by an adminstrator/web site owner as being one they don't want run on their website, they can have that URL/ad blocked... it's easier on non-forum pages to identify the variety of ads/sites that might show up, but with forums topics span so many different things it increases the chances something A) completely off-topic to the discussion (to a human reader; not to an advertising algorythm like Google) and/or B) offensive or at least ill-placed, will be displayed. It's sort of like the insurance related ads I saw on CNN's home page during/after Katrina with ad taglines that were never intended to be matched with such devastating coverage.

- Shannon (Geeky, Wild Texan)