my CPC was limited for 0.19 for first 5 days, then it raised to 0.50, but now I am getting 0.05 to 0.10 for usa clicks, also I am getting high paying adds, such as loans and business, I've read that this is adsense error and it may bi fixed, can someone help me? my friend also have this problem. p.s don't say that I must block low paying adds, or advertisers stopped to paying for my keywords or cpc is not same all time or I was smart priced, I have checked everything and theres no common problems about my cpc drop, this account is two month old.
It is no error. There is nothing you can do. The cpc is based on what the advertiser is prepared to pay. so you fell for the nonsensical hype about targeting high paying keywords?
Maybe you're in either a SEASONAL NICHE (anything related to schools - except online MBAs - are like this) or you're in a niche that experienced a niche-wide REPRICING. It happens.