Pay per click ads are designed to allow website owners to pay or bid a specified amount of money only when they receive a qualified click or visitor to their website.

Pay per click ad agreements allow the website owner to only pay for unique clicks to a specified website. PPC ads are provided by most large search engines these days

To maintain a successful pay per click ad campaign, your conversion rate must be high enough to obtain a profit per individual click. You can read more about conversion ratios under the link titled: “Conversion Rates” on this website.

The largest pay per click search engines are google and overture. Overture was the first pay-per-click search engine to emerge back in 1997. They started out as a small company called GoTo.com and they set the stage and business model that all other PPC Ad companies would eventually follow. GoTo.com has since changed its name to Overture at overture.com and is now fighting with Google Adwords for number one.