I have just trippled up on a channel/account that gets about 500k impressions a day. I went from .5% ctr to 1.5% which is bitter sweet because while its awesome I am making alot more on that channel/account it also sucks cause i could have been doing it for months. you just gotta try some different things... this just hit me about 3am one night when I was looking at what my competition was doing and I was like woah thats a great adsense placement... I copied.
i'm glad to pay you if you tell /show me how i can do the same. i.e. i've tweaked as many suggested, but the per click is still not nearly as high paying as promised ... not even close to the $10 - $20 - $40 per click as mentioned by bunches of sites & gurus. Thanks.