The Diablo II Official forums at Battle.net have been modified.  Trade forums have been now divided by realm. Check out the new links and bookmark if needed.

Due to player feedback and our continued efforts to provide an intuitive and helpful environment for the Diablo II community, we’ve re-separated the Trading forums by realm.

They are now:

Diablo II Europe
https://www.battle.net/forums/board.aspx?ForumName=d2-europe-trading

Diablo II USWest
https://www.battle.net/forums/board.aspx?ForumName=d2-uswest-trading

Diablo II USEast
https://www.battle.net/forums/board.aspx?ForumName=d2-useast-trading

In order to retain posts that may have held important information, the previous singular trading forum has simply been renamed to USWest. If you had any posts you would like to keep or copy over, they’re still available in the USWest trading forum.