Howdy folks. For the last year I have been using the 460 horizontal banner on my website and was getting about 0.40 - 1.20 per click, with a lowish CTR. I decided to replace it with the leaderboard to increase CTR. CTR has doubled and the CPC has plummeted to 0.01 !! Ads being served haven't changed so what gives ?? Will the unit eventually get higher CPCs with age (does it work like that?) or should I just abort and go back to the 460 banner ? Cheers.