dave50 - "To those of you who think it doesn't matter, of course it does! I suppose you think it's ok to eat with your mouth open, curl your legs under you while you are sat down eating and generally be a total slob but hey it doesn't matter, as long as the food is getting into your mouth who cares?"
I have to echo Ecclescake's response here - the behaviour you add on is not connected in any way to eating with cutlery.
I think people should eat in a way that they are comfortable, subject to somple good manners, but the finer points of holding a knife or fork a certain way is really not relavent.