Have We Met Before?

So this weekend, I went to a conference in Chicago. During the conference, 5 or 6 women asked me if we had met before (if I went to college with them, if I was from their city, etc). No.

It's common, this question. I don't know why. I don't really think I have "one of those faces;" in fact, I think my looks are fairly distinctive. I'm short and slim with green eyes; short, curly red hair; and a big nose. Apparently, there's an army of Jewish (faux) redheads running around.