Although Everything is good and working fine on their site. You can mine and withdraw coins their but if you are looking to buy some hash power from them then beware. I doubt that they have any Mining farm to mine coins.
According to me what they are doing -
They are providing Hashrate, but there is a term which clearly states that the mining contract will void/canceled if the mining won't able to cover maintenance fee for 3 consecutive days. And the probability of this is very high in future due to rise in difficulty and price fluctuation. So, if someone starts mining with them for a lifetime term he won't able to cross breakeven due to this rule and the company have not to pay him anymore and make a profit on it without mining anything.
If we analyze then on 7 points taken from
https://bitcointalk.org/index.php?topic=878387.01) No public mining address / no user selectable pool.
2) No endorsement from any ASIC vendor
3) No relevant pictures of their hardware and datacenter
4) Open ended IPO / fractional reverse mining risk
5) Referral programs and social networking
6) Anonymous operators
7) No exit strategy
From My Side
No buying limit on orders.
They fail on 1,2,3,4,6,7 and 8 all these points and that's why I think they are running an obvious Ponzi scheme. They have made with such terms that they can run the Ponzi for years and won't get caught, even they can take an exit without a problem if they want due to their rules. And no one is able to prove anything.
Buying hashpower on Minergate is not recommended until they come up with solid proof of mining operations.Mining with your equipment like CPU/GPU and others is recommendedRef LinkNon Ref LinkYour Views are Important to me if you think my speculation is wrong please inform me asap.