Pay+per+click+advertising

Pay per click advertising is where web sites can post a link in one form or another (Banners, Words, etc.) Every click on this link will be recorded. The website will then gain money from every click on the link from the advertised company.

For example: If I am advertising Google. I can post the following link: www.google.com, every click on this link will earn me $0.1 from Google.