In 5 days, the estimated difficulty increase has already gone from ~29,829,000,000 to ~35,259,000,000. At the current increasing rate of network hash power, in 5 more days, it's likely to hit 40,000,000,000.
This is really pushing the little guys out of business. Even with the most powerful and efficient miners, there is virtually no way to make a profit unless electricity is free and mining hardware is free. You'd expect with such extreme network hash power that BTC value should have skyrocketed to $1000 USD or more. But instead, it's remained somewhat steady around $500. And now, it's dropping closer to $400. How can this be profitable for anyone, even the huge mega farms?
