Hey there, this is a great little trick I found to make some really really fast coin.
So whenever you get this quest
Power of the Great Ones - Quest - World of Warcraft
Power of The Great Ones
Whenever you create the 'Energized Polished Crystal'
It gives you a 9 minute buff which will reduce damage you take and heal you when you deal damage. Go to the camp and find yourself a safe spot, where you can take 10-15 mobs and aoe / kill down. These Frenzyheart guys drop anywhere from 4-15 silver a piece, and every now and then you'll get a mana potion, scroll, health pot, etc.
They in packs of 3 from the left & right. They also spawn from the entrace way
http://i39.tinypic.com/33w5n3l.jpg <--Screenshot
Pull them to here for a safe-spot
http://i43.tinypic.com/xo2oo5.jpg <--Screenshot
I've made about 17g doing this, just trying it out. Thought I'd post, I'd like to know results if anyone tries this
The only problem I had was looting these guys, because my safe spot became over-ran XD.