Hi guys, Incase any of you are experiencing low CPC and unrelated Adsense ads appearing on your website, remove all the Ads but your best performing one and watch what happens. I found my CPC went up significantly. With only one space on your website, publishers need to bid higher for that spot, giving you a better CPC. My website looked better too because I didn't have a a bunch of Ads affecting the readability of it. Good luck
That is a really good advice, I would also suggest you to track where are your visitors clicking the most in your page , so that will let you know where to place your ads ,you can google for this scripts
Where is your ad placed ? I have also experienced low CTR but then developed a plugin ( it is free: http://wordpress.org/plugins/fs-revenue-mazimizer/ ) to show an add after the first paragraph of the content. The CTR of that ad was at least 5 times higher than the second placed. Then I removed all other ads and the income doubled or tripled.