@ AussieHash
what you say (e.g. "Ghash pool miners there received no rewards from blocks ") is not correct.
http://awesomescreenshot.com/0b12amhdf6All my mining is payed absolute correctly by them! (and with the bonus of NO FEES!)
And after 3 month bitcoining i would say that cex.io is an absolute fair business partner, what i can't say from others!
just my 2 cents...
I have updated the post above.
Ghash is a fantastic value proposition - 40% of blocks mined, merged mining, low variance - 100% profit.
Vs bitminter 1% fee, lots of variance
Vs btcguild 3% fee, 25% network hashrate
BTCGuild's rolling 3month luck is 103% +/- 0.9% and they pay out orphans/rejected blocks
If ghash has say 100% luck and 3% rejected blocks you would be worse off than BTCGuild (which has 1% orphans/rejects but these are paid to miners). Ghash also probably only has 95% uptime, and are hopable. Their work shifts are only 6 minutes (vs 50-120min on other pools) - so if they have a pool or CEX hosted interruption, you won't mine many blocks, but when the hashrate recovers the others can earn back in to 100% earnings very quickly