When running a Ponzi scheme, how does one avoid enormous, unexpected withdrawals - runs on the bank, so to speak - that would pull back the curtain and reveal a little man blowing smoke? One way would be to attract a core of investors who could be counted on to never withdraw more than a small percentage of principal each year.

My favorite pre-Ponzi schemer was known as '520 Percent Miller' because he promised 10 percent returns a week, or 520 percent a year. Of course he was just using new investors' money to pay old investors, and soon he was on the lam.

No Ponzi schemer tells anyone exactly how it works. The purpose of a Ponzi scheme is to trick people, to take the money and run.

Bob Altman got nothing from the TV series 'M*A*S*H,' and the royalties for the theme song went to his oldest son, Michael, who wrote it as a 15-year-old poet!

I know that plenty of folks have issues with Social Security, but I'd urge them to confront it on its own terms. Calling it a Ponzi scheme is misleading and does more to cloud the issue than it does to illuminate it. And yes, I do know that unless changes are made, the current system is unsustainable. But that doesn't mean it's fraud.

Every swindle is driven by a desire for easy money; it's the one thing the swindler and the swindled have in common.

When running a Ponzi scheme, how does one avoid enormous, unexpected withdrawals - runs on the bank, so to speak - that would pull back the curtain and reveal a little man blowing smoke? One way would be to attract a core of investors who could be counted on to never withdraw more than a small percentage of principal each year.