Hey,
Every once in a while, I see a comment or something that brings up a subdivision I hadn't known. The last one I discovered was /noobstories. The obvious ones are /newest, /threads, /comments and /leaders. Here's a list of the least obvious ones that I have found. Add any missing ones in the comments. Happy new year!
/noobstories - news submitted by new members (intended for moderation
/noobcomments - comments submitted by new members
/active - actively commented stories
/best - best recent stories submitted
/classic - submissions by established members
/bestcomments - best recent comments submitted
/newpoll - submit a new poll
did I miss any?
added:
/saved?id=yourusername shows stories you've upvoted
http://news.ycombinator.com/topcolors shows the most popular colors of the top bar.
http://news.ycombinator.com/welcome prints "Welcome to Hacker News, <username>".
/vote is the page that votes go to
http://news.ycombinator.com/submit is, trivially, where you can submit pages
http://news.ycombinator.com/submitlink is /submit where you can only submit links; no text. However, the page still says you can put text in.
/item is the permalink to a comment or submission (or internal message, in case of comments/questions to YC applicants).
/edit lets you edit a comment
/reply submits a comment as a reply to a submission or prior comment
/submitted?id=<name> lets you see the submissions by user name.
/rss is the rss feed
http://news.ycombinator.com/newcomments is the latest comments on HN.
Those are, as far as I can tell, the publically accessible pages that haven't been mentioned elsewhere on this submission. There are some admin-only ones, like /badsites and /editors.