Hacker News on 13 May 2009

• HN Frontpage ranked using only votes from accounts over a year old
• Stephen Wolfram’s Introduction to Wolfram Alpha (screencast)
• Steve Blank: Gravity Will be Turned Off
• Rob Pike on Richard Stallman
• Your Morning Commute is Unique
• Paul Graham: Lisp in Web-Based Applications (2001)
• Juno: A Lightweight and Simple Web Framework for Python
• The evolution of a website design
• Tough Crowd
• The The Nimrod Programming Language