i have a good revenue from adsense (well, of course not compared to sharks like showmoney, lol, but still better than some). also, i have a lot of traffic. from what i see, other people who have traffic similar to mine (i am talking only about one site now) are getting a lot more revenue, so everything suggest to try and play with the position of the ads. BUT, they are already optimized in according to the heat map and i am afraid that changing position will result in actual loss... would u recommend playing with the position for the sake of "possible" increasement, or will u suggest to leave it as it is? thanks in advance!
There's a great comment at http://www.conversion-rate-experts.com/articles/101-google-website-optimizer-tips/ about testing... That page is about conversion rates, but the same thing applies to testing Adsense CTR's. Aim for the "lifetime of success".