The company doing this is called Zazoox -- they have a site that shows off all of their different consoles and offers them (for a price and a service charge) to vendors who can then put them up in public places. World of Warcraft isn't actually on their games list yet, so apparently it's just being tested in Denver and other places. Apparently, the price is 25 cents a minute, but as some of the commenters to Soley's post say, if you're entering your WoW password on what is basically a public computer and something goes wrong, it could cost you a lot more than that.
Of course, overseas in Asia, this kind of thing is common -- the vast majority of WoW players there play in public cafes and Internet houses, and in fact the pricing scheme of the game itself there is per hour, not per month like it is here. But for some reason, this kind of ubiquitous public gaming has never taken off in the West -- maybe Zazoox's consoles will get people playing out in public.