Got it. I just did some quick calculation.
It is NOT profitable in anyway.
25000 gold = 29 gold/hr
![Huh](https://bitcointalk.org/Smileys/default/huh.gif)
Also, it seems 70% of the "gold" you get can only be used to buy turtles and only the remaining 30% can be withdrawn.
![Wink](https://bitcointalk.org/Smileys/default/wink.gif)
Exactly. It is not a ponzi. It is like a very high risk, very low return investment.
That is if it survives for many months, you will make a very small profit.
People are probably self-referring them to win the contest. I am pretty sure they are not going to pay all that for referring.