I don't think it's a scam, though I did thought so at first.
2 days ago I started mining for 16 hours with ~330Mah/s and it shows I need to get paid for 2.1 PPC when confirmed, I immediatly switched to coinotron, but I just entered my profile and it shows that half of my shares are accounted for (some still waits confirmations) and my balance is 5.33790279 PPC..
So I don't know, maybe the estimated PPC is wayyy off, but it does eventually gives you the coins at the end?
What did it actually send to your wallet? What was displayed on the page and what it actually sent me were very different
I actually didn't send it to my wallet yet.. good point, I'll send it and report back.
EDIT:Alright, so it took about 40minutes for me to get 5.332903 PPC to my wallet, I think it's fine?