Alright, I just recently join a Dungeon in Duty Finder. I was attempting to talk to them with the translation stuff. It was the start of the dungeon too! And they just rushed off without saying anything and they all died! I looked like total crap because i wasnt able to heal! WTF! So much for trying to communicate with foreign players.
The least people can do in DF is greet back when the Parnooks greet them - It's like playing with NPCs sometimes. Usually, they finally get talkative when something goes wrong >.>