Features Improved comment threads * Whether or not you've read a comment is tracked*. * *Old comments are cleaned out after a few days. * Comments you haven't read are highlighted. * The number of new comments per thread is displayed in the header. * Submit new comments, edit and delete existing ones without leaving the page and losing your place. * Navigate the comment threads with your keyboard. * j: go to next unread comment * a: upvote current comment * z: downvote current comment * r: reply to current comment Endless front page * Click 'More' to load new stories and new stories will be inserted into the existing page. * No more "Unkown or expired link." Hacked Hacker News will get a fresh link if the current one expires.