User blog comment:The Completionist/What function does the ignore list have, and does anybody actually use the mute button?/@comment-5556439-20130927204639

Well you dont just mute someone for calling your mom a fat pig. You mute them if theyre consistently being a problem and are proving that they WONT be a asset to the team via communication.

And yes ignoring the person DOES give you a higher chance of not being matched with them.