This is a game that I've seen in a few places, and it's great fun to play. What you do is, write three lines in your message -
^ - something about the person who posted before you.
< - something about yourself
V - a question for the person below you.
So say the first post was -
^ Uhm....no-one, because this is the first post!
< likes moose
V Also likes moose?
So someone could reply:
^ Indeed I like moose
< But I prefer alpacas
V Favourite chocolate bar?
And so on. So!
^ No-one there!
- Is going out for a walk in a few moments
V Likes going out for walks?