yasamoka wroteYes, but when you're making more bitcoins than what you're spending for power consumption, that's when you start making "free money". The break-even is calculated based on the power efficiency of the hardware in question with respect to the performance it's churning out. Else there wouldn't be that interest in bitcoin mining.
well about money/watt. We have a perk here in Lebanon called "Ishtirak" electricity. Such as you pay the same no matter what you consume. So at least you can pay that bill via bitcoin money, which I am currently trying to do, and looking at the graphs, I'm on the right track : P