Not sure why I thought of this but some people always give xx's to those they may not know. Not criticism by the way.... it's just I prefer to give xx's to people I know....not sure why and not sure why it matters either for that matter.
Mine usually go something like this:
If I don't know the person I usually put a smile
If I know the person only very slightly I'll say "Take care" or something along those lines...with a smile :) or :D
If I know the person better than that they'll get some xx's and a smile :) or :D
This isn't a set rule though - it depends what mood I'm in at the time.
This is probably a completely pointless thread, but we've all got to have one sooner or later
Really though, I'm just intrigued as to whether anyone else goes along the same lines as me, or if it is just me!