APC is a wonderful resource: high-caliber pilot participants, excellent moderators, high general amount of participation, professional courteous mood, up-to-date news and discussion, contributing experts, flexibility in topic, regard for education, family atmosphere. Ads would offset the bandwidth cost, and I am sure you would choose them in a thoughtful way as to any effects they may have on the Forum. I happen to like Purdy Neats, Ray Bans, Telex 850's and goofy furniture made out of aircraft parts, a certain number of such ads would not hurt the cause.