If you haven't yet heard, Bitcoin's are a virtual currency that can be used to buy goods and services from those who are willing to accept it. They can even be traded for real money much like exchanging Euro's for Dollar's.
The process of generating Bitcoin's is using you computer to hash files. But the long and short of it is that the program makes your PC run at full load which increases your power consumption.
In the Canadian town of Mission, BC. A bylaw states that town Public Safety Inspection Team's may search home for Pot Growing Operations if you use more than 93 kWh of power per day.
People have started to increase their mining operations to more than just one computer, which common sense dictates, will use more power. After adding more and more computers to the operation their house's eventually use more than 93 kWh per day which alerts the Public Safety Inspection Team.
So far only a few cases have been reported.
I can only imagine what the Police were thinking when they break down the door expecting to make a huge drug bust, but instead find a group of nerds hunched of computers!