The process of a visitor clicking on a Web advertizement and going to the advertizer's Web site. Also called ad clicks or requests. The click rate measures the amount of times an ad is clicked versus the amount of times it's viewed.
When a user clicks on a hyperlink in a web document. Many web statistics are based on the process of having users "click through" links to other pages. Cloaking
Click through is a technical gorgon term which means a click on the banner.(from Wikipedia, free encyclopaedia)