Dow plunges 1,000 points, possibly due to PEBCAK

Stocks in the US were down 1,000 points earlier today. Initial reports blamed the plunge on fears over debt in Greece, but CNBC is now reporting that the dramatic drop may have been caused by user error: "According to multiple sources, a trader entered a b for billion instead of an m for million in a trade possibly involving Procter & Gamble, a component in the Dow." (* Hey, at least he didn't type g for gajillion)