YouTube: A threat to television, or to water-cooler chatter?

YouTube and other online-video venues may represent a fundamental challenge to television as an entertainment medium. “In December, Internet users watched more than 10 billion videos online, according to comScore Inc. — one of the single heaviest months for online-video consumption since comScore began tracking it in 2006,” the Wall Street Journal notes.

But as that story also suggests, what this really means might simply be that YouTube is a great way to kill time at work.