I agree if you as a new miner begin your venture with CEX.io you are going to be bnoth unsatisfied and you image of bitcoin mining will be tarnished. CEX.io has huge up to 62% maintenance fees on their cloud mining. sometimes if the block is 1 hour or more you will find the reward on that block was less than the maintenance fees, resulting in costing you bitcoins in the end. With 30 Ghash this amount of loss could be pretty big. CEX.io is a PPLNS pool meaning they pay out on the last certain number of shares you submit in the last certain amount og time, meaning you may process and submit 100,000 shares but will only get paid for 25,000 of those shares, HOWEVER you will be charged maintenance fees for all 100,000 shares you submit, asnd this is how your reward is smaller than your maintenance fees. If you think you will be cool and point your own equipment there, you will see by comparing the reports extensively they pay you for only 50% of the work your miners put in as well. CEX is not a pool set up for new miners, hell its not a pool set up for any miners at all. this pool is set up for profit to the owners. My advice to a new miner stay as far waway from CEX.io or get that voucher and take it and trade it on another start up mining pool. like eobot who gives you some extra % of that voucher. I think maybe it is 2% more, and eobot is a great pool to learn about a lot of coins, and mine much more than just bitcoins or litecoins.