Quote Originally Posted by Jacost View Post
Unfortunately there's not much SE can do about that without heavily reprogramming the engine. The entire zone is loaded into the client, and that data can be read without the server picking it up. It's a real shame; there's abusing the system, and then there's outright cheating.
Just going to note that the client actually only has access to things within a certain range of you; you do not have the entire zone of mobs cached unless the zone is extremely small. To toe further around these types technical details is iffy discussion at best so I'm going to stop there.

The reason why you see all of the players suddenly storming toward one spot is that every server has multiple hunting Linkshells all inter-networked with each other. So if one player sees an elite mark, and calls it in shout, or to their LS, that gets sent to several other linkshells. That's also why these players are late to the kill so often.