I had such bad luck with CEX and roi that i am turned off to cloud mining but I hear good things about hashnest - maybe give it a shot
thx for the warning on early fee's thats probably something they should make very aware to people so they dont panic.
It was very suprising to me too, watching the value I had in there go down (when I bought an antminer s5) and an (antminer S3) with 1 GHs from each, and the 24 hour earning went to ~-0.00001000 after about 2 minutes.
I recently went back an bought 40 s3 GHs contracts and 1 GH S5, went to around -0.00010000 but quicly went to a positive figure,
The reason that happens is that they pay you for each mining block found and the amount you get paid can also vary depending on how long it takes to find that block.
So for example if you just buy some hashpower and it takes a few hours to find a block, the amount you get for the block might be less than the maintenance fee for that particular block so you pay for the electricity etc for that time and depending on things it might be that the maintenance fee was more than what you got paid for your share of that mined block of Bitcoin.
But then you will find that some blocks are found within minutes or less so then you get paid for your share and then because the amount of electricity you have used is lower then you pay less maintenance but what you need to do really do is just let it do its thing over a day and you will find that you will get a positive payout over 24 hours.
Sometimes though with S3 hashpower you might find that the amount you get back each day over 24 hours is less than what you get paid for shares so you get a negative but it does not happen often. Normally that will happen if the pool does not find many blocks over a day, but then you can find the next 24 hours they find above average so over time it all averages out anyway.
