In the crowd I hang around with, people are usually called by a forum handle, mostly because everybody meets on the forums, gets together for a tournament, and introduces themselves as their handle. Last time I tried to introduce myself as "Spencer" people were confused, and then I told them I was "rabbit" and everyone knew who I was. Even some of my friends I call by their handles....
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O, and I doubt I'll ever be able to call iago this "Ron" thing.