Looks interesting, will do a small article about this service in a few hours 
IT is like CEX.io your price in KHs can only go down over time.ROI jumps +50% with upcoming/existing Asics and forget about return
.Eg for price 3500Khs i would prefer buy Direct 5 BTC than Khs than 3500$ for cloud mining ring +some maintenance fees.
Then wait 3-4 moths till they dump coin prices so much that you will buy them for ~80~90% discount
.Cool tool to dump ASIC(script) coins which are are out.
I wonder how many coins will with their POW to other algorithm Blake256,SH3,scrypt-jane,X11(Darkcoin).
I think its risky at current prices but good luck.