Before any advertising campaign goes live, make sure you have prepared your landing pages appropriately. A landing page is a Web page that is created specifically to respond to a marketing campaign you are running; when done properly it can greatly increase conversions, or the number of customers who act on your offer.
Now more than ever it is important to track your ROI, or return on investment. ROI will help you determine whether or not an ad campaign has generated more, or less, revenue than it costs. The Web metrics software systems available today allow you to track your ROI pretty easily. They even allow you to track the different ads you have running at the same time.