Our affiliate program allows your affiliate users to track the success of where there advertise.  To use this tracking feature they simply append a tracking id to their affiliate link by adding a "_" and then the location of your advertisement.

For example, if your affiliates are advertising on Google they could use the affiliate link below.

http://www.yourdomain.com#oid=1001_1_Google

There is also a separate report available to your affiliates so they can easily see the success of these sub links.