Comments Owl for Hacker News has a block-this-user feature. Available for the major browsers. https://github.com/insin/comments-owl-for-hacker-news/releases h

Comments Owl for Hacker News has a block-this-user feature. Available for the major browsers. https://github.com/insin/comments-owl-for-hacker-news/releases https://github.com/insin/comments-owl-for-hacker-news/releas...