Bitcoin is a somewhat mysterious, fairly confusing type of digital currency that, until recently, you could use to buy large amount of drugs on the internet. But now you can use Bitcoin for something (arguably) even better than drugs: New York City real estate. A tipster recently sent along a listing for a $2,580/month one-bedroom sublet in 99 John Deco Lofts, accepting Bitcoin, which hit the market last month. And today, online apartment search marketplace RentHop announced in a press release that it will be accepting Bitcoin from people advertising NYC apartments on its site.