An online anti-spam service, Sneakemail, has reportedly been subject to a devious Googlehack: The Google user agent has been fed Sneakemail defamation, while everyone else has been seeing a product plug for competing company X. Or so the story goes. I have not been able to verify the claim, since the offending page no longer lists any defamation (nor does Google). How devious! Build your street cred, and then give Google and only Google some solid bait words to draw unrelated traffic to your site.