What kind of joker correlates the % of people visiting hacker news to the hackers. You are retarded - don't let anyone tell you otherwise. Its like saying - lets see how many people visit a second grade news site which has a finance section, and that would indicate the geographical distribution of people interested in Finance.
A good feature for HN would be if someone adds a new account (one minute ago when I checked this one), submits some sort of trolling or moronic comment that gets down-voted a few times (which hopefully this one will), it should be flagged, looked at by an admin, then just purged. Obviously no good intentions with the creation of the account or the comment.
Even so, I don't think purging poor comments is the correct idea. I myself have been learning what is/is not acceptable here by reading said poor comments.