Based on low usage, we've retired the cross-channel conversion tracking feature. As of August 25, 2008, the feature and its related data were removed from AdWords accounts.
As an alternative to cross-channel conversion tracking, you can use the free Google Analytics service to receive even more data about all your online marketing efforts. Google Analytics is one of the most powerful web analytics products on the market, showing you how people find and explore your site. With this information, you'll know which keywords are really working, which ad text is the most effective, and where your visitors are dropping off during the conversion process. Google Analytics helps you improve your website's return on investment so that you make more money on the web. Visit http://www.google.com/analytics to learn more about Google Analytics.
If you already have an Analytics account and would like to track all your non-AdWords online advertising campaigns, you'll need to tag your destination URLs with special variables.
