CGIRedirect

CGIRedirect lets you to track how much traffic you send to other sites and which links users like...
Youve probably noticed that many of the larger websites dont link directly to another - even though to the user it appears that they do. These sites use whats called a redirection so they can keep track of how many users go from their site to another. You can see this in action at sites such as WebAttack or even here (take a close look at where EXACTLY that last link went).
AnalogX CGI Redirect is a simple to use/install CGI executable that gives you the ability to track (either via webserver logs or its own internal logging mechanism) users clicks as well as mask URLs to a limited degree. You can either link by explicitly listing the URL, like the example above, or you can choose to translate the URL internally, such as this link. Its a great way to help you better understand what users of your site enjoy, so you can find more of the same.