Wow, thanks for the....

I've seen this thing advertised in the flyers in the Sunday paper recently. My question is: What the hell is it? Is it some sort of jet pack (cool!)? A leaf blower? An industrial-strength device designed to handle hazardous materials? A SuperBlaster 2000 XLT? A handy lightweight flamethrower? What, you say it's a vacuum by that English guy on TV - how boring. What the hell are you supposed to vacuum with that thing?