I have always found it kind of... (weird? An amusing quirk of the culture?) that my HN account is tied very closely with my real identity and yet I'm always addressed by login name rather than real name here. I guess you can file that away as yet another example of the power of defaults.
On other business-related forums, like the Business of Software board, everyone either calls me Patrick or "that bingo guy". That might be because of the display name alone.
Oddly enough, given the post subject, I knew who you were immediately after reading a comment of yours about a week ago (and it had nothing to do about bingo, though it may have been entrepreneurial). I read it and immediately though it sounded like your writing style but didn't recognize the username. Clicked through, and lo and behold, there you were. Just had to register and mention that after your comment.
I figured you had the choice of username, so even though you're Patrick in your profile and if I ever met / emailed you I would use that, you had chosen to be patio11 in this forum.
I also find it odd at times - my username is my full name, yet people responding to me will call me JacobAldridge not Jacob.
So, whats the verdict Patio11, are you Male or Female?
Great link nonetheless.