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 "Channel"
5. Click "URL channels"
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.
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After that, you don't need to do anything, even when generating the scripts for your ads. You don't need to select the URL channel. You only have to select channels if you are using Custom channels