Google AdSense is the current leader in content-sensitive web-based marketing. Webmasters can place Google AdSense JavaScript code on their web pages in order to allow Google’s servers to show context sensitive advertisements (Google Adwords). The left hand side of this page shows an example of a Google AdSense skyscraper displaying a text or image ad.
Google’s terms and conditions are very strict such that many web publishers cannot use adsense adverts on their sites. They are either denied from joining the Google AdSense program in the first instance, or in a situation that is becoming
