What's your reasons for avoiding?  I tend to avoid trash talkers.

Zero

I get avoided almost every time I have a good game.

Since I'm thirty (mumble mumble) I have a fair bit of experience playing shooters and can finally say I'm slightly above average after putting in too many years of practice. It's a bit of a kick in the teeth to see my "Unsporting" rep go up each time I do well. I now have my Xbox set to friends only communication as I don't want to hear the vulgarities so common in this and other games. Yet my "Trash talking" rep (sits around 16%) this is clearly vindictive abuse of the rep system.

To answer the post though I avoid some players who just walk all over the opposing team game after game but use the "too good" set. I used to avoid those that sent me hate mail too but that was fixed once I changed to friends only comm.

I guess what I'm trying to say is that the real issue is abuse of the rep system.

I tend avoid everyone in objective gamemodes that dont play the gamemode so most of australia and half of new zealand are avoided at this present state of time