When you see accounts like that: 1) Downvote their comments (if you have the karma to do it). 2) Click on the comment timestamps and flag them. 3) Email hn@y

When you see accounts like that: 1) Downvote their comments (if you have the karma to do it). 2) Click on the comment timestamps and flag them. 3) Email hn@ycombinator.com to report the account. Dang is good about killing neo-nazi accounts when notified, but he can't read all the comments here.