A year ago, Michael Buffington did the short-lived Asbestos News blog experiment to capture high-paying adwords revenue. Apparently he didn't break the market because the uncommon Mesothelioma -- a cancer caused by asbestos -- will still let you mint your own cash if you can get someone to click on a related adword. The phrase mesothelioma lawyers costs an advertiser $54.33 per click. For more absurd rates, check out this cyberwyre list. Via

I guarantee you that Comic-Con and AAAI keywords don't pay nearly as well :)