Tinkertown wrote:Everyone may need on any item that can sell on the auction house.
Don't really agree with this. It can go either way, but the group should decide if everyone is rolling greed or need on these items.
Back to the main topic tho...
Any special designations on loot should be predetermined before you start the dungeon. If you don't do that, anyone that wants an item for their class can take it. Consideration for others is always appreciated, but not mandatory.
Best way to avoid this is to do guild runs and avoid pugs.