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1.
A type of investment scam.

A ponzi scheme is a fraudulent investment operation that involves paying returns to investors out of the money raised from new investors.

The scheme is named after Charles Ponzi, an Italian immigrant to the United States in the 1920s.
I got taken by a HYIP ponzi scam last week. They promised 20% a month but ran away with my money!
by Alfredo Alberto September 19, 2004
 
2.
Being forced to pay more than you want for something. Anything related to paying a tax, fine, fee or any similar and unjust charge. Having to pay for something that you think you are entitled to. To describe anything else you want to use it for.
I just got jacked with these new fees set by RCN. These fees are nothing more than a ponzi.
Chicago city tax is such a ponzi.
by ponzi'er February 21, 2014
 
3.
The fastest, most effective way to make money on the internet.
you must run your own ponzi for it to be effective.
1) ssshhhhh dont tell anyone - but I made $2000 over the weekend by running my own ponzi - then pulled the plug!

2) Fuck rip off ponzi mutha fuckas!!! give my my money back or I'll call the FBI!!!
by Anonymous April 26, 2003