Related note: I wrote a program that collects all the HN, Reddit, and Digg Technology articles and ranks them. It was a fun quickie-project in F#<p>Instead of stripping the intersection, I find that dupes usually indicate a more important story, so I check on those first.<p>I find that by indicating relative movement (is the story moving up or down in rankings?) and relative comment change I can get an indication of what's hot or not. Whenever I'm bored and want to do a bunch of reading, I can control-click my way into dozens of useful stories pretty quickly! It was a fun project.<p>Here's the site if anybody's interested:<p><a href="http://project-management-methodologies.net" rel="nofollow">http://project-management-methodologies.net</a>