A fee that a website publisher charges to serve your display ads on its site. Instead of paying for your ads to simply show up, you only pay when the audience interacts with them. Google is a major publisher of cost-per-click (CPC) ads, and it contracts with other publishers to distribute them to other sites, too.

Building an Opt-In List, Building Relationships
If you aim for success, you must do everything within your means to achieve that. You just donÃt go on sitting there in your house complaining about not getting as much profit as you expect.