Which was published for longer, GameFan or Comics Buyer's Guide?
GameFan: GameFan (originally known as Diehard GameFan) was a publication started by Tim Lindquist and Dave Halverson in September 1992 that provided coverage of domestic and import video games. GameFan:  The original magazine ceased publishing in December 2000. Comics Buyer's Guide: Comics Buyer's Guide (CBG; ISSN 0745-4570  ), established in 1971, was the longest-running English-language periodical reporting on the American comic book industry. Comics Buyer's Guide:  The publication ceased with the March 2013 issue.
Comics Buyer's Guide