Am I the only one who didn't know what TMZ stood for? Interesting..... The term “Thirty Mile Zone” originated in the 1960s, when due to the growth of location shoots, studios established a “thirty mile zone” to monitor rules for filming in Hollywood. The center of the zone was the offices of The Association of Motion Pictures and Television Producers, formerly at Beverly and La Cienega Boulevards in L.A. . TMZ reinvented the thirty mile zone and now serves as the Internet’s premiere address for entertainment news.