Well if you play legacy you know its like impossible to get wotlk rep there well here is a simple way to grind that rep up.
Note: there is no hacking here it is a server side bug.
It all happens at Midnight server time (not your time realm time) when the daily's reset, before they reset go find a daily quest that is easy and gives the rep you want. Do the quest before midnight hand it in and then at midnight when the daily's reset (it will show yellow text on your screen that dailys have reset) and that quest will become repeatable. Do the quest over and over till your exalted and profit.
Here's a SS of what it says:
Instead of saying you can only do 24 quests it says 24 then 25 and then is repeatable.
Note: relogging will stop the bug from working so make sure to stay online while you do it and you HAVETO be online when they reset for it to work.
Got every JC recipe in one shot by doing this
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Next bug: Endless Eternals.
This is pretty widely known right now but may come in handy if you don't know it.
Get 1 Eternal EG: Eternal Fire - Item - World of Warcraft
Only have one in a stack, and simply right click it and it will give you infinite Crystallized Fire - Item - World of Warcraft have a feeling this is going to be fixed quick so do it while you can.
This also can be done with anything like that primals or the enchanting dusts like Greater Cosmic Essence - Item - World of Warcraft
I guess on the low rate server to get gold you can make the eternals and vendor them 8g a stack if you need it that bad, can put em on AH for more but that is heatscore :P
Enjoy!