this is how I block those low paid adsense ad. 1. manully check those adsense links on my page. if they are MFA, I block them. ( i m wondering if theres a better way to do it ) 2. max 2 ads / page i want my click to earn at least 5cents. if you have better idea to block those low paid ads, please share with us.
Using the competition filter to block some sites/ads from being show is an essential tool for anyone who wants to increase their earnings. Also, the use of channels to differentiate the values of clicks on each page or section is also a big help.
Usually I just have one unit per page, but there are some places where I have two. It mainly depends upon the size. If I use a 160x600 I do not normally place any other units on the page. If I use a smaller one I may use two.
less ads = low CTR = high CPC thats is what I think.. Manually adding sites to competitive ad filter is a good option, but it has a drawback also.
It depends. In many areas the CTR isn't affected by blocking links. There are simple enough good ads anyway. I recommend using adsblacklist.com to find and block low paying ads.