I find it really useful to get people that are chasing me, throw it down on the ground while running or even bounce it off a wall or corner. Usually they either get caught in it and you can kill them, or they just stop chasing you because they dont want to get emp'd. If you want to use the emp a lot you need to really get a feel for that time delay and get creative with using it to your advantage.
As others have said when you toss one into a fight pretty much everyone runs away from it, which can be really useful when trying to clear out an area or when trying to advance.
Also if you hit someone directly with the emp it will go off. So you can use it for escaping, by face hugging then launching it, or if you are really good you can just hit the intended target with it (pretty easy on Cs, kind of hard on Bs, really hard on As).
Honestly the throwing mechanic and the projectile being changed to what the ISM is was one of the better balance changes in recent Hawken history. It makes the use require creativity and added a new dynamic to playing with and against emps. IMO it is one of the most balanced items in the game.
Edited by CounterlogicMan, April 01 2014 - 07:54 AM.