WARNING: THESE TRADES MAY BE UNSAFE

Because the process of trading Default items for Hardcore items does not involve our secure trade screen, it's a very risky process. We receive many complaints per day where players have scammed each other and not fulfilled their side of a cross-league trade. Due to these complaints, we strongly considered banning this type of trade entirely. However, upon examination, there are many legitimate players who do these trades safely.

We will allow this type of trade but we make no promises that the people you're trading with are going to give you what you wanted. Cross-league trades are performed at your own risk. There is nothing we can do if someone scams you. Do not trade items between leagues that you are not fully prepared to lose.

Please keep all threads about cross-league trades in this forum so that the above warning can be seen. Please do not advertise cross-league trades in the trade channel in-game.

Update (October 16, 2013): Do not trade items between long-term leagues and three-month leagues. This gives a clear advantage (based on prior gameplay) in the challenge leagues and is not allowed. For now, you may still (at your own risk) trade items between Standard and Hardcore, or between Warbands and Tempest but not between the two sets of leagues.