URL Tracking: One of the easiest ways to track responses to your promotions is to code your URL. Simply add a special code at the end of your link and then look at your log files to view click-throughs. You can use any code you like following the question mark. The coding will look similar to this: http://www.yourdomain.com/?advert1
CGI Tracking: Using your CGI directory you can accomplish many tracking tasks. CGI scripts run on your server, so you should be versed in their installation or be prepared to pay for installation from the supplier.
Tracking Services: If you prefer not to work with scripts, you can hire a third party to track your campaigns from their server. These services charge a monthly fee, but are well worth it in terms of helping you pull the best results from your advertising.