My fear is that we're getting to a point, likely sub-$200, where BTC isn't viable to mine even with very efficient ASICs and cheap power. I fear we're coming to a point where the big mining ops in China are going to start cutting capacity, making the confirmations on exchanges longer (because of less available mining capacity). The good news is this will cause a lot of the mid size and smaller players to cash out their equipment, so you can get some decent rigs for next to nothing. The bad news is that these kind of things typically take a long time to rebound, if they do.

I know my cut-off point is at $180. At that point, even with my cheap power and my paid off S5s, there's no way I could continue mining. I may let it go a bit longer (at a loss) to support the process, but it's something I don't see being sustainable as a miner (for me anyway).

I'm hoping I'm wrong. Well, more specifically, I'm hoping it hits $200, I get a bunch of S5s for $100 each, and then it rebounds to a bajillion dollars a BTC. Wishful thinking...

Denis