I thought I'd add in my opinion. I used this a few weeks so I could see if their payouts and calculator were correct and this is what I found.

Every single coin I mined with this site was under HALF what I should have have gotten. Take bytecoin for example. I was mining it when you could get thousands a day very easily with AMD cards. Their payout was in the 100s and that was with PPLNS on every coin that offered it with more than 48 hours of mining to stabilize. The numbers are so off it's insulting. Doubly so when I moved over to another pool and received MORE than MG was saying.

It's a really cool idea that comes at the expense of the owners robbing you. If you are just starting this might be an option but realize this company is preying on those exact people to rip them off. Get yourselves onto a real pool and real miners as soon as you can.