Custom Map Patcher
Custom Map Patcher is a tool that allows you to play custom map on Battle.net. (EACH PLAYERS MUST DO THAT) Do this process for all the friends you want to play with:
- Create the map "Lost Temple" on Battle.net and everyone join it
- Launch the map patcher
- Select the map you want to play and click "Patch"
- Go back to SC2 and start the game
If you are interested, there is a post explaining the technique behind it.
Sincerely Coldragon, Daimakaicho, from fwec.fr (French!).