 Do you look at who wrote a comment before you read it?
sounddust: I rarely look at the names unless it's an extended conversation and I want to make sure I'm still talking to the same person.The usernames on this site are very small and inconspicuous.  I take that as a sign that HN wants us to focus on the content of the message rather than the author.   When I'm on sites which place more visual emphasis on the author (names in big fonts, avatars, etc), then I always notice who writes comments.