Reputation building is one of the important ways for getting ahead in the WoW GOLD universe. This was not change in the WotLK, in fact the reputations gaining of the Northrend factions is easier to get because of the different content you have in Northrend.

Even more important, you can get your reputation and start enjoying it almost immediately, as developing reputation is not in the same manner as before, so you don't need to spend weeks or months building it up before you can start getting the rewards. So you will ask how to get Reputation fast.
 
Questing and Instances: WoW GOLD WotLK has more reputation building quests than ever before, and many of the quests will give you reputation for many factions at the same time. Furthermore, much of the reputation system in WOTLK is for your main faction, horde or alliance, so you don't have to get out of your way to gain it. In addition, at the higher levels you will get to use the "Progressive Instancing" so you can gain reputation even faster.
 
Tabards - Tabards of faction are new addition to the WOW game. This addition made it so much easier to gain fast reputation with factions, and get the reputation reward items without the need to spend hours grinding away in a dungeon or looking for those special mobs. All you need to do is buy the tabards of the factions you want to get reputation with, and wear it while you make it through dungeons.
 
Daily Quests - There are many daily quests you can take in WOTLK that will give you reputation. WoW GOLDYou will see that you can get dailies from as low level as 71 and up to the max level of 80 (with special dailies for the end game level). This means that you can start getting your reputation higher even in the beginning steps of Northrend, when you only start investigating the new continent.