Do you know what Airtime is? Yeah, we didn't know either, but the emerging tech company has dropped a pretty entertaining little 2 minute and 40 second riff that explains it all pretty well. Ian Plaff, who works at ad agency Portal A, takes the role of Buckley Rivington, a snooty sort who explains what this ChatRoulette-style service -- which lets you talk with people you do know, while letting you randomly talk to strangers too -- is all about. Along the way he gets some help from guests like MC Hammer, Kurt Russell, Gary Vaynerchuk and Ronnie Lott. Not bad at all. [AdRants]