Maybe go through that list and only keep the ones you actually know and likely to play with. This isn't Facebook. Then, in the future, only friend people that you have played with, got along with, and know they'll be on and down to do the same things as you. Sifting through 500 names when you need a raid is only going to be counter-productive. I run a clan of 20 people and we always get our shit done every week. I delete people that are never around. This game is about networking and knowing who is worth playing with.