Ask HN: My iOS app got pirated, what to do now? Raging? Nothing? Partying?

Hi today I've discovered that my iPad app watchlater (checkout the website here: http://watchlaterapp.com/ - basically it's InstaPaper for Video) got pirated: http://goo.gl/xM05Q

What to do now? Raging? Nothing? Partying? Is it an accolade? Would you contact the filehoster to take it down? Can I technically detect within the app that I'm running on a jailbroken device?