Can I use AdSense on more than one Web site?

Sure you can, and here are a couple ways to do it. First, you can use the same AdSense code on all your sites, and the metrics — the tracking measurements, like number of clicks and payment for clicks — are all collected in the same report with no way to differentiate the Web site. The other way you can track multiple sites (or even different pages within the same site) is to use Google channels. Channels simply allow you to track different sites or pages on a site by using code that’s written to indicate each separate channel you set up.