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While markets are supposed to ensure transparency by showing orders to everyone simultaneously, flash orders are currently allowed because of a loophole in securities regulations that allows for immediate trades.

In a flash order transaction, buy or sell orders are shown to a collection of high-frequency traders for just 30 milliseconds before they are routed to everyone else. They are widely considered to give the few investors with access to the technology an unfair advantage, even by some of the marketplaces that offer the flash orders for a fee.

Steve Jobs was never going to let Flash on any Apple product again like that after in 1997 - he's got a long memory - they said no and Bill Gates said yes.

When we had the 'flash crash' in 2010, where the price of some stocks briefly fell to zero, high-frequency trading played a big role in that event.

Remember when those CD-ROMs from AOL came in the mail almost every day? The company was considered ubiquitous, invincible. Former AOL CEO Steve Case was no less a genius than Mark Zuckerberg.

Flash and HTML have co-existed, and they're going to continue to co-exist.

As the Nasdaq soared in 1999 and early 2000, demand for many offerings far exceeded the supply of shares available at the initial offering price.

I'm not against Flash, and I love the work that people such as Joshua Davis do.

'Flash mobs' are reported on extensively because they're novel and can be used to stoke fears of young people and the Internet. The media, of course, have absolutely no clue what they're reporting on.

One way for investors to protect themselves from a rapid change in the price of a stock is to use a limit order rather than a market order.