TofuRobot
Forum Legend
It's pretty standard practice for it to be visible that a user has been banned on every forum one might go to. The usernames are anonymous, and the visible "banned" tag under the user's name serves to indicate to other users and new visitors what type of comments are not tolerated on the forum. This label makes it known that others are safe from such behavior here on this forum. You can't shame someone who you cannot identify. It's the individuals comments and behavior that are not tolerated. It's pretty simple, really.