Ok, so even the US government takes it seriously?
Bitcoin Regulation News - CoinDesk
Australia, Canada, Argentina, and pretty much the rest of the world says it is non Ponzi-related. Read the links on that page, look up government regulations. I don't get how these govermnets are still debating over it if you are so certain it's Ponzi. (from reading the facts, and knowing the facts, you would regret calling it a Ponzi since you'd know that you were totally wrong)