Doesn't matter what the J/GH is if you can never recover the capital cost of miners even with free electricity, which is where bitcoin mining stands right now.
nah, 350$/btc is still much better than last year.
edit:
Nevermind the fact that it's *still* up 270% over the last 12 months, and 2700% over the past two years. These guys always seem to leave that part out...