You may have more than one sites displaying AdSense Ads for Content. You may want to see which site is performing better. To track this, you will have to set up URL channels. Then all the clicks and earnings coming from that site will be shown in the report. To set up URL channels, do the following steps:

1. Sign into your AdSense Account
2. Click the "AdSense Setup"
3. There will be 3 choices, "AdSense for Content" , "AdSense for Search and Referrals". Click
"AdSense for Content".
4. Under the AdSense Setup tab, click "Channels"
5. Click "URL channels" (See screenshot below.)
6. Click "Add new URL channels"7. In the box, enter the URL's of the sites you want to track,
one URL per line8. Then click "Add channels" and you are done.