Looks like a lot of hashing power coming online these days partly due to the BTC price increase and partly to all those ordered mini rigs and singles coming online finally.
GeoRW, this is really nice of you to inform us all about you shorting the mining bonds. I guess it's your desperate attempt to manipulate the market and cause a panic, so you can recover your short sells. I hope you used margin for this and end up with a massive margin call on top of it.
BTW, I can explain the sudden spike. I started up my Icicle Cluster and got it running @ 0.69 petafl
PS! "Trust No One" as it's written under your icon