I'm sure that enough of you have played DotA to be familiar with the banlist program that is out there. Is there an addon out there to automatically keep track of players you never want to group with again, regardless of server? If so, is it individual only or does it allow you to share your lists? If not, would such an addon go against the Blizzard ToS? If such a thing is permitted, with all the complaints about dungeon finder I can't for the life of me understand why it isn't already out there.