kapow - 8:13 pm on Jan 29, 2009 (gmt 0)

Assuming:
- most of the click-fraud occurs via hacked computers,
- most of the hacked computer owners don't want to pay for quality security,
- this is costing Google a lot of money.

Google should sponsor a free GPL anti-virus / spyware service. Then armies of compromised computers could be protected freely - which would save big money for Google (and a lot of other corporations).