Adsense: How can you find out which blog or page is making money?

So you have a couple of blogs or websites all linked to the same adsense account? You want to find out where the revenue is coming from, perhaps to improve or dispose of a certain blog/page?

This is easy but it is something which has to be activated. Log in to your adsense account - go to channels and click on the "guide to using channels", when you are done with that then begin adding the URL's you want to monitor. You can add up to 200.