Bitcoin is a Ponzi scheme: The Internet currency will collapse.

``The currency was launched in 2009. It has traded for less than 1 cent. As recently as a year ago, a bitcoin was worth less than $5; this week the price of a bitcoin reached $266, an increase of more than 1,000 percent over the last three months, but then yesterday plunged to $105 before finishing off at $165 last I looked. More than 11 million bitcoins circulate, and so their aggregate value is fluctuating between $1 and $2 billion--a tiny fraction of the trillions of dollars in currency but not bad for the infant brainchild of an anonymous brain.''