Ponzi? Yes. Scam? Not necessary.
Depends on the contract. Which you can easily check.
If the contract is correctly programmed, it is
impossible that the operator will disappear with the money.
That's the magic of ether.
So yea, this is a usual ponzi. Like every other project here.
But please, stop screaming scam until you checked the contract.
Some contracts are manipulated so that each payment is sent to only one address. Logically, from the operator.
But is the contract correctly, is the only risk, as with any Ponzi, that not enough people deposit.
So please, stop yelling scam.
Here are several Ether Pyramids / Ponzis that are checked and verified:
https://bitcointalk.org/index.php?board=197.0They are NOT Scam, by definition.
You can easy check yourself if the contract is legit.
There are hundred of tools out there for exactly that.
Here is a quick overview over some 'dapps' (decentral apps):
http://dapps.ethercasts.comAnd here is a list of verified contracts:
https://etherscan.io/contractsVerified