thanks for all the input and I will try to clarify the change.
1) yes, these ads are supporting the forum. The more it grows, the more expensive it is to keep it running. The ads are targetted ads and controlled completely by google's "algorithm". Whatever you guys are talking about in the posts is what ads are going to appear (based on what keywords the advertisers are targetting).
2) the images were added because they have been proven to increase the click-rate of the ads (which is the only way the money is made).
3) please don't complain about the scrolling. If that was an issue you guys wouldn't be filling the forum with those weight loss tickers

(which are 1000x more annoying ... trust me)
4) it has also been proven, that even though some find those images to be "negative" that those images are suggestive of being fit, and even though your concious mind says they don't help, subconsciously it does (read "Blink"). Most (not all) of the people in those pictures work their butts off to be in that shape. Some of the pics may be of annorexic women, but if you look closely at most of them, those women are toned ... you don't get that from not eating.
Personally, I used to be in horrible shape and I've been working my ass off for the last 3 years and enjoy looking at those pics because I can feel how close I am getting to be in the state where people admire the shape that I'm in as well.
5) I'm thinking of changing the forum to a tiered membership. Pay a one-time fee of something miniscule, like $5 and you get an ad free time ... feedback on that issue would be appreciated.