Advertising and Ad Sales The advertising module in WebGUI gives you an easy way to put advertisements into a rotation on your web site. You may be thinking to yourself, “Why is that useful? I get the code from my ad partner and put it into my HTML. I don't need no stinking advertising system.” You're only half right if that's what you're thinking. Depending upon what your site is about, you may be able to make more money by selling ads directly to advertisers. In addition, you may be able to make more money by using more than one ad network. Using the ad system allows you to distribute ads for multiple ad networks in the same space, and allows you to throw in your own advertisements as well.