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  2. Ponzi scheme - Wikipedia

    en.wikipedia.org/wiki/Ponzi_scheme

    A Ponzi scheme claims to rely on some esoteric investment approach, and often attracts well-to-do investors, whereas pyramid schemes explicitly claim that new money will be the source of payout for the initial investments. [2] A pyramid scheme typically collapses much faster because it requires exponential increases in participants to sustain it.

  3. Pyramid scheme - Wikipedia

    en.wikipedia.org/wiki/Pyramid_scheme

    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.

  4. Scheme - Wikipedia

    en.wikipedia.org/wiki/Scheme

    Classification scheme (information science), eg a thesaurus, a taxonomy, a data model or an ontology; Scheme (mathematics), a concept in algebraic geometry; Scheme (rhetoric), a figure of speech that changes a sentence's structure; Scam, an attempt to swindle or cheat people through deception; Scheme, a type of government program in India

  5. Pump and dump - Wikipedia

    en.wikipedia.org/wiki/Pump_and_dump

    Ponzi schemes typically come with the expectation of profit over a relatively-extended period of time and typically last for months, years or even decades before their inevitable collapse. By comparison, pump-and-dump scams are designed to make profits extremely quickly and are executed over a period of weeks, days or even hours.

  6. Tontine - Wikipedia

    en.wikipedia.org/wiki/Tontine

    In French-speaking cultures, particularly in developing countries, the meaning of the term "tontine" has broadened to encompass a wider range of semi-formal group savings and microcredit schemes. The crucial difference between these and tontines in the traditional sense is that benefits do not depend on the deaths of other members.

  7. Scam - Wikipedia

    en.wikipedia.org/wiki/Scam

    A sudden manufactured crisis or change of events forces the victim to act or make a decision immediately. This is the point at which the con succeeds or fails. With a financial scam, the con artist may tell the victim that the "window of opportunity" to make a large investment in the scheme is about to suddenly close forever. The in-and-in

  8. Rhyme scheme - Wikipedia

    en.wikipedia.org/wiki/Rhyme_scheme

    A rhyme scheme is the pattern of rhymes at the end of each line of a poem or song. It is usually referred to by using letters to indicate which lines rhyme; lines ...

  9. Racketeering - Wikipedia

    en.wikipedia.org/wiki/Racketeering

    Racketeering is a type of organized crime in which the perpetrators set up a coercive, fraudulent, extortionary, or otherwise illegal coordinated scheme or operation (a "racket") to repeatedly or consistently collect a profit. [1]