Will Filtering Adsense Ads Improve My CTR?

You may or not be aware that there is an adsense tool called "competitive filter" which allows you to block up to 200 unwanted google ads.

If you find ads on your site which you believe either to be morally wrong, completely irrelevant or extremely low-paying (those niggly links which only pay 1 or 2 cents!) then you can right click over the link, copy the URL and add it to your competitive filter, the only problem is that if you have a blog in a niche with few relevant ads then it is likely that those ads will be replaced by irrelevant ads or worse yet nothing at all.

You have to be very careful with this tool but unless you are earning big bucks, it's definitely worth toying with it.