What would you do if your $6 mobile app gets pirated a lot? And by a lot, we mean 85 percent of the installed user base? Some might have called it quits and yanked off their app. Others might have tried to enforce even stricter piracy countermeasures. But not Android app developer Jack Underwood, whose popular Today Calendar app is experiencing those numbers. Instead, he is "punishing" pirates by making them walk the plank into shark-infested waters. Well, not really. He's just filling up their calendars with a lot of pirate-themed events.