Pay per click is a internet advertising module where one gets paid with clicks he receives on the adverts that are there on his site.
The more clicks a advert receives shows its popularity as compared to other ads. Google Adwords also now have pay per click module.
Pay per click module was in past very much vulnerable to click frauds but now thanks to Google a few measures have been put in place ensuring safety and security of the user.
PAY PER CLICK
Now it has become one of the most common modules for internet advertising available and one of the most lucrative too