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.
Perhaps it's an inherent problem with HN? Disposable accounts for when you want to say something that may/will be voted into the negatives.
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.
might be a troll, but i wouldn't 100 percent count on it. if you're new to a site and want to get attention quickly, what better way than to make a trolly-sounding comment that everybody will pile on immediately.
it takes some people awhile to realize that it doesn't work that way around here.