Those numbers surprised me to, but I don't think they should have. I rarely meet anyone in software that doesn't know at least know about HN, if not actively read it. In fact, my sister's boyfriend is in tech even though she isn't. When I met him for the first time, my sister felt a little left out because we immediately got into a deep discussion about an article we read on here. We live across the country from each other, but reading hacker news is almost expected for both of us.