The Obsidian Cape Scam is a scam in which a player is selling an Obsidian Cape and switches it with a black cape, which can lose the victim a large amount of cash or (a) valuable item(s). Note that this scam is hard to do now because of the trade screen update which shows a large red exclamation point when something is removed. In order to punish the scammer, you can report him/her via Rule 2 of the Report Abuse system.As of 01/02/08 this scam is now extinct, although due to the reintroduction of free trade this may no longer be true.