Blogger, itinerant rock critic, and former NPR Arts Editor Bill Wyman had a fine piece in yesterday’s Washington Post introducing the Moby Quotient, the formula he and, uh, “hyperbolic geometry” expert Jim Anderson have devised for quantifying exactly how egregiously a given artist has sold out when they license one of their songs to an advertiser. (Moby, in case you don’t know, won the dubious honor of having this formula named after him for his…