Since 1st of July, my adsense earning has a big decrease … too bad, it is about 50% :(. My site is having the about the same stats with previous month: unique visitors, page load, ads impression, clicks … all are about the same. Only the average cost per click of adsense ads has dropped about 50%.
Webmasters at webmasterworld.com disccussed about this topic too . Some of them think the phenomena is caused by the HOLIDAYs in USA (hmm … most of my visitors are from USA and Europe). Hopefully it will back to normal as soon as posible.
I think the CPC is higher the first month intentionally, in order to give you a warm fuzzy feeling ;)
Its been months since anyone last clicked on my ads. I think yours should be better than mine ;)
My sites are targetting low paying keywords, about 4 to 6 cents per click … now I only get 2 cents ++. Today’s stat is slightly better than the previous days, it seems people are coming back from holiday … haha :)