I have had to delete a thread or two because the content of the thread has generated some very inappropriate advertising via Google Adsense. While I can filter these ad domains from appearing in future Google ads, it doesn't immediate alleviate the immediate problem. One banner was extremely obscene and pornographic so I deleted the entire thread to remove this garbage from the forum immediately.
If you see any inappropriate banner ads, please contact a moderator immediately. In some cases, the word filter will have to be employed to make certain words no longer yield certain types of Google Ads.