When walking out of the door at internet exchange a while ago the bloke behind the desk, who i've seen a few times in there now and we are on 'friendly greeting - how are you' type terms commented on my collar - to which i suggessted he looked up 'Collaring' online and went to wander out of the door, he pulled me back and made me sit down with him and look it up - was a very pleasent experiance, and one of the nicest interactions with a public person regarding my collar i've had so far. he didn't have the time to sit down and go through it in depth, and still didn't quite understand, but i can see i piqued his interest and he will probably be looking into it more in a quiet time at work.....