Friends/Parties
Friends
Registering and adding friends to play together makes the game a lot more fun.
Also, adding friends can help you to upgrade your Caravan's facilities.
Blacklist
Another player's chat can be hidden by registering him/her to the Blacklist.
The blacklisted party/name won't appear in the list even if he/she sends a friend request.
Further, removing someone from the blacklist can be done from MENU > Details > Other > Friends > Block > Remove.