Gotta find the sites that pay low, hard process to do and would require some extreme research even at that you wont be gaurented to get some good results
You have a filter at your Adsense account and every URL you put there will be blocked from showing ads at your site.
Ah, Very cool. Never knew that. But like others have said above, there is really no way to find out what each ad pays unless you click on them yourself... which it won't really matter then, as you won't be with adsense long.
Check for the low paying ads and block them by using filters. However, I have seen mixed reactions from people who had blocked the low paying ads. Initially the income was high and later it dropped to the normal low. Try it and see which is better for you
Well, you can't filter the low-paying ads, and try to get a higher-paying one. It is because the replacing ad will be even lower-paid. Please refer: http://www.dagsensecodes.com/2008/04/how-to-filter-unwanted-ad.html
If you know which ad is low paying, then you can filter them out. but the problem is that, how to know which ad is low paying ?
Here are two example, what ads you think pay more 1 ad in a 300x250 block? 4 ads in a 300x250 block? Also sites like Tripadvisor.com appearing on entertainment websites (ect), what has it in common? Nothing! They farm keywords for traffic and eventually it costs them only 0.01 cpc. And there are quite a lot of websites you can see that have totally nothing in common with the content on you site.
The best bet is to block sites which are not related to your content. That why you have good ads for your site.