[Ikon]

Level Based Aggro

Aggro radius is not finite. It decreases in relation to the difference in level between the mob and yourself. This is why greens will often not aggro until you stand right on top of them. It's also why a level 60 monk can pull a mob from in between 2 blues and aggro only one, while a level 52 monk will aggro all 3 every time. This is why a level 60 of any class is sometimes a better puller than a level 52 monk.

Aggro Delay

When you first enter a mobs aggro range, there is a random delay before a mob aggros you. This is supposed to represent the mob debating whether to eat you or not. During this time you are still not aggro, which is why sometimes you can run through a mob with SoW without aggroing, but always aggro it whenever you run through it at normal speed.

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Aggro Passing Delay

This is a variant of aggro delay. When an aggro mob passes another non-aggro mob, it will pass the Hate list. When a mob wishes to pass the hate list

http://youngsdojo.tripod.com/Pulling.html