You may not like the terms, but such is the way of the free thing.

A winner! A winner!
Erik Levin wrote: "With regard to GSG's ninth adventure and the contest, it is amusing that the linguistics section is on the fourth floor of the library because Labov tested for postvocalic r's in New York City department stores way back when by asking where something was that he knew damn well was located on the fourth floor. Am I right? Did I win?"

He is right! He did win!
The complete story -that is, the story of why post-vocalic rs are of the slightest interest- can be found in Labov, W. (1966). The Social Stratification of English in New York City. Washington, DC: Center for Applied Linguistics.