Also, according to these guys
http://bitcoincloudmining.center/hyip-monitoring, they've been around since October 24th. I keep getting nervous and yanking my deposit and then I'll get ballsy or curious and send a different amount, usually more, but a couple times I sent less than the original. So far though, I've had no trouble with them, it takes forever for them to receive my deposits but withdrawal payouts come almost instantly.