The Nintendo Nsider forums were made several years ago, and consisted of an active community of gamers ranging from all across the gaming spectrum. It included many boards, which were specific to certain games or parts of the gaming community (fan fics, fan art, etc.). These forums also included an SSB board, where many smashers got together to post about SSB and SSBM.
As of September 17, 2007, the NSider Boards have been shut down indefinitely and all topics were locked; all messages were erased on September 24, 2007. Since then, there was however an unofficial Nsider2 Forums made to replace it.