Smash Back Room
The Smash Back Room (formerly the Melee Back Room; also known as the SBR) is a protected forum on SmashBoards. Only members that have shown considerable knowledge or skill (either by posting intelligently or by tournament placement) are permitted to read and post in this forum. The Smash Back Room is most famous for producing a tier list every year or so, and for releasing suggested rule sets that tournament organizers often use in an effort to keep a standard play format across all regions.
While the Smash Back Room is often criticized for its lack of openness and its exclusivity though it is still the de facto "governing body" of most of the competitive Smash community. Their tier list is held in the highest regard by the professional community. However, the rule list has met with issues with different areas complaining about the stage list (either it being too liberal or too conservative). This has happened a lot more often with the brawl list in comparison to melee. There have also been issues more recently with other parts of the ruleset; specifically being the amount of ledge grabs allowed (mostly as an Anti-MK rule) and what should occur after a timeout.
there is currently 2 separate SBR's. There is the MBR for Melee Backroom and the BBR for Brawl Backroom. There is also a smash 64 backroom being created as well.