Sha'tar Reputation Guide
The Sha'tar was the core reputation for Burning Crusade. The Sha'tar reputations main hub is Shattrath, the largest city in the Outlands. The Sha'tar have quests spread all over the world to help you raise the reputation. It also has 3 instances directly tied too it, all which require a flying mount to access and 68+.
The three instances are The Mechanar, The Botanica and The Arcatraz. These three instances are part of the "Tempest Keep" area located in Netherstorm. Running these instances will give you faction with the Sha'tar all the way up to exalted. So, if you don't want to you will never need to run a heroic to raise your reputation.