Google AD Sense?

[riyaarora1266]

Basically how AdSense works is that you get a special code to put on your site, this code reads the content of the page and also knows the user's browsing history and then displays a targeted ad for them. When someone clicks on the ad, you get paid.
They can be in the form of banner ads like this but there are also text link ads as you see here, and other forms of link ads as you can see here at the bottom. Depending on how you configured your AdSense account, you can do so that you only display text ads like these or display only ad banners, or you can let AdSense decide to maximize your click-through rate.