Sounds like the same scamsite as bitfactory.co
To me it also looks like pretty much like the same basic concept. Just as bitfactory just copied it. One major difference is, that ore-mine is up and running by far longer now. A lot of people actually got their money back and made a huge profit. As I can see in the bitfactory thread, they have trouble paying you for a while now. Ore-mine also has paying troubles every now and then, but it usually gets resolved fast, nothing compared to your experience with bitfactory (you can read about it in this thread). Of course ore-mine can also be scam, especially this promotions right now are ringing the alarm bells. But it is still unfair to say it is the same as bitfactory, as long as you actually get your money here at ore-mine. Just be careful. On the other hand, spreading investments is a good strategy to lower risks.
I think this ponzi is on the verge of collapsing coz they're starting to have withdrawal delays or problems. Its time to jump off the boat while its early