how to i check how many clicks and impressions are coming from each of my websites? e.g. Check impressions & clicks for domain.com and not total eanings that i could get from say DP?
you have to create a custom channel, you can do that when you set up the ad sizes and colors you want.
Yes, go to your adsense control panel and set up new channels. Then create new scriptlets to include on your different sites. It's a piece of cake.