SEND THIS ARTICLE TO A FRIEND

Pay per click (PPC) advertising continues to gain popularity in the online marketing world as an effective and inexpensive way to drive targeted visitors to web sites. Research firm eMarketer reported that between 2002 and 2003 the paid search listing market grew 175 percent. Major trusted search properties such as Google, Overture, FindWhat.com, and Kanoodle, all offer PPC campaigns in which you pay only when someone clicks through your banner ad or link. But PPC also has an enemy--click fraud--and understanding what it is and what to do about it should also be a key part of your PPC campaign.