I calculated this out a couple days ago. The hash rate has been rising pretty steadily exponentially with all the new ASICs coming online, and can be expected

I calculated this out a couple days ago. The hash rate has been rising pretty steadily exponentially with all the new ASICs coming online, and can be expected to double again within 25-30 days. The current break-even price for 1 GH/s is about 0.03-0.04 bitcoins -- that is, if you bring 1GH/s online right now, over the next 6 months you will mine a total about 0.035 bitcoins and at that time you will be minting at less than 1% of the rate you started with. You can buy 1GH/s for about 0.12 bitcoins on cex.io right now, if you are a sucker.