First of all, I have no problem with any website earning some cash to keep things going. Sites with no revenue stream eventually die. But... I was rather surprised to see some of the "ads" that have been associated with top level threads. For example, a thread in Ethics, Morality, & Justice called Bisexuality http://www.sciforums.com/showthread.php?t=37730 generated an ad for http://www.defendmarriage.net, including a banner declaring "Show your support for traditional marriage, purchase and display merchandise with our popular Defend Marriage logo". Of course the Google ad engine searches the text of the post for keywords, and supplies an ad that seems like a good fit for their advertiser. I don't think that anyone would have a problem if we were talking about ads for Coke, or automobiles, or travel agencies, or toilet paper. BUT I am a little distressed at the appearance of "ads" within a discussion forum that are clearly designed to detect the presence of an opposing opinion, and then supply propaganda to counter it. Seems to me that this type of targetted "ad" tends to undermine the very nature of an interactive discussion forum. Google would be better served if they stuck to products and services, and stay away from the non-profit and not-for-profit organizations. Is there any way to restrict the advertising robot to products and services only?