Alfred Hightower, wanted on drug-dealing charges, had had a warrant out for his arrest since 2007, but had skipped the US for Canada. Sources said he was addicted to "some warlock and witches game".
Deputy Sherriff Matt Roberson, a former player himself, identified the game as WOW. Suspecting that Hightower wouldn't have given up his account, he contacted Blizzard with a subpoena, expecting to be ignored. But after a few months, the California developer sent Roberson Hightower's IP address, account information and history, billing address, online screen name and preferred server - even though it wasn't compelled to by law.
"They were very cooperative. It was nice that they were that willing to provide information," said the deputy Sherriff.
Roberson got a longitude and latitude from the IP address, typed it into Google Earth for a street address ("It works wonders. It uses longitude and latitude. Boom!") and contacted US Marshals with the information. They in turn got the Canadian Mounties involved, and Hightower was deported from Canada and arrested once over the US border.
Moral of the story: if you're on the lam, it's probably best to leave your WOW character behind along with your credit cards.