This was a VERY interesting article about how pay-per-click advertising works, and the possibility for abuse (click fraud). Advertisers can click on the ads of rivals in order to “spend” their rivals’ advertising budgets and knock them off line. People with money-generating ads featured on their blogs or sites can profit if they find a way to register clicks from their sites (without getting caught and banned all together by Google).

It’s a long article, but well worth the time to read!

Tags: pay-per-click, click fraud