I have contracts with GM too, would love to buy more power for mining BTC. I'm just afraid like what's happening with cex.io now.
http://blog.cex.io/cryptonews/cex-io-temporarily-suspends-cloud-mining-services/
Quote
Taking into consideration our users’ interests, the recent Bitcoin price drop, as well as the upscaling of the mining difficulty, CEX.IO Bitcoin Exchange would like to announce a temporary suspension of cloud mining services provided by the platform at the time of the next difficulty increase.
http://blog.cex.io/cryptonews/cex-io-temporarily-suspends-cloud-mining-services/
Hehe I just paid for lots of TH`s... and I`m planning on purchasing more. It really would be a shame to suspend the service for me
