First of all: Hey! I'm back, after a very long break
Second of all: I looked around, and to my surprise I did not find anything on this.
As of 5.1, there are now new dailies in Krasarang Wilds, and on some days the dailies are in a cavern.
Both factions will get a daily quest called "The Spirit Trap" The Spirit Trap - Quest - World of Warcraft
In the quest you have to kill 3 mobs with 1.1m hp, which keeps spawning mobs with 118k hp. (The adds are spawned very close to the Spirit Trap) As an almost newly leveled 90, it is difficult to keep up with all the adds spawning, while also nuking on the Spirit Trap.
The exploit is simple:
When the Spirit Traps summon those adds, they aren't spawned into combat, meaning if you keep your distance to the Spirit Trap, you won't aggro the adds, granting you a free kill!
The adds will remain after the Spirit Trap is dead, but should be no problem. If you do not wish to fight them, just wait 30 seconds and they should all be despawned.
To those who might say that this is intended: How in the world could this be intended.. It gives ranged players a very unfair advantage over melee's. Blizzard likes balancing things so that everyone may experience the same gameplay.
Important:
As a hunter, warlock, boomy, or whatever ranged unit that summons minions/pets, be careful of sending weak or temporary units over to the Spirit Link, because they will aggro the adds, and when your unit dies, the adds will go on you. (Example in video)
Video:
Useful links:
the spirit trap - Wowhead Search
The Spirit Trap - Quest - World of Warcraft
The Spirit Trap - Quest - World of Warcraft
Spirit Trap - NPC - World of Warcraft
http://www.wowhead.com/npc=68152
(HOLY JEEPERS! This is my 100'th post, hurray!)