I've hit the second tier of rewards once, aside from that, it's mostly just accumulating money over a period of time. For someone who can't invest too heavily in anything else but this and mining, it's at least
something.Also, I think your account has to be at least a week old to get a payment? If you haven't gotten yours yet, try posting on the official thread. A simple google search will point you in the right direction. This is my first post so I can't put the link up, sorry.
![Sad](https://bitcointalk.org/Smileys/default/sad.gif)
The owner seems pretty active in his thread with many people confirming payouts, so I'm pretty sure it's legit, and any error is probably just standard computing/human error. I don't really see how this can be a fraud since you're not paying for much, just five minutes of your time.