Participants in the Madoff investment scandal Stanley Chais, a philanthropist who invested heavily with Mr. Madoff, and Carl J. Shapiro, one of the money manager's oldest friends, are among at least eight Madoff investors and associates being scrutinized by the U.S. attorney's office in Manhattan. Prosecutors are continuing to probe Madoff family members and employees. Others include: Frank Avellino, a Florida accountant who ran an investment fund that invested client money; Noel Levine, a real-estate investor who works out of a two-room office on the 17th floor, next door to Madoff's fraudulent investment operation, and Palm Beach investor Robert Jaffe, a son-in-law of Mr. Shapiro who
Pyramid scheme the person at the front. Organizers can further profit by starting a scheme with a queue with "shill" names that must be cleared out before genuine people get to the front. The scheme collapses when no more people are willing to join the queue. Schemes may not reveal, or may attempt to exaggerate, a prospective joiner's queue position, a condition that essentially means the scheme is a lottery. Some countries have ruled that matrix schemes are illegal on that basis. While often confused for each other, pyramid schemes and Ponzi schemes are different from each other. They are related in