Instead of spending $1 on something, you can burn $5 of electricity! Suppliers figure you're more likely to waste some energy than you are to type in a credit card number, so they say go for it.
And as the big ASIC miners get more efficient, your device will generate even less revenue. In two years, you'll be running at a small fraction of the chip's original mining rate, but still wasting just as much energy!
And as the big ASIC miners get more efficient, your device will generate even less revenue. In two years, you'll be running at a small fraction of the chip's original mining rate, but still wasting just as much energy!
http://media.coindesk.com/2013/09/bitcoin-difficulty-graph.p...
I'll pass, thanks.