Inside AdSense: Choosing the channel

Inside AdSense: Choosing the channel: Before you begin optimizing your pages, it’s important to have channels in place so you can track the effectiveness of any changes you make. But what’s the difference between URL channels and custom channels -- and when should you choose one or the other? Let’s look at the benefits of each, and which type of channel is appropriate for which situations.

URL Channels

URL channels provide an effective way to track your ad performance on different sections of your site or on different domains. Since you don’t need to change your code at all, they're easy to use. If for example you have a blog about cars and another one about boats, you can create a URL channel for each one. Then, when you optimize, you can use your channel reports to determine how your changes affected the success of the ads on each blog.