Click Fraud: Somebody Is Cheating You from ClickZ is another look at protecting yourself
from clickfraud. Many of the tips and information may be familiar to our readers but refreshers never hurt. It also mentions to online tools you might tap into.
For more on the subject of clickfraud, see also the Search Ads:
Clickfraud of our Search Topics area available to Search Engine Watch
members, which summarizes stories on the topic going back for years.