This may sound like a stupid question, but here goes. Even though I've not had too many punts yet, I've already had two episodes (once entering, and once leaving) when I've run into another punter at the door of a wg's flat. Both times, I basically looked the other way and kept on going, not looking at, saying anything to, or acknowledging the other punter in any way.
I was wondering what other punters do when this happens to them? Is there some etiquette that I'm missing? Do you nod or say anything, or do you ignore them like I do?