[to1y]

I agree. Most people who do this are introverted/shy by nature unhappy with it and this is their method of proving to themselves and the world that they're not. However it ends up being just as awkward and an equal waste of time because it lacks genuine emotion. Don't say anything and be content with it unless it's something you truly want to express. I.e. whatever is natural for you is probably natural for them.

[flappyeagle]

Why do you assume it lacks genuine emotion? What if someone (e.g. me) is simply unpracticed at expressing it?