Is that name you use on your registration the name by which you are commonly known in fandom and by which other people will recognize you, or is it some random name-like string of characters to which you will not answer and will look at me strangely if I try to call you by it, even though it's printed on the badge? The former is a "real name" in my opinion. The latter is not.

This inability of people to see this distinction thoroughly muddies the waters of these discussions.