Everyday, my aggregate clicks are about 15% more than the sum of all my channel clicks. Why do I have missing clicks?
If you are using URL channels, some of these clicks could have been generated from cached versions of your page appearing in search engine results. Also, someone might be framing your content so the clicks are attributable to a different URL. Using ‘www’ in your URL channel can also have an effect on tracking. If you are using custom channels, it is likely that one of your ad units might not be attributable to a channel. Is it OK to create an Adsense Search Engine, ie direct users to a particular keyword? I recommend reading the ‘Implementation and Operation of Ads and Search Results’ section of the AdSense ToS (http://www.google.com/adsense/localized-terms). We ask that you do not pre-populate search results. Search queries should be generated naturally by your users. In fact, a new AdSense for search feature allows you to see the top 25 queries generated by your AdSense for search box, which is a feature many publishers requested to help with site optimization. Also, as per the AdSen
