Hacker News on 2 May 2008

• Clickpass on how to get a visa for America
• Evan Williams: Twitter not abandoning Rails
• VC Funding Spelled Backwards
• uWink: A Cold Greasy Plate of Fail
• Iron Man: Steve Jobs is even tougher than you think
• Clients I Have Failed: What Not To Do
• A Gentle Introduction To Learning Calculus
• The #1 most important personality trait of an entrepreneur
• Want That Post to Go Popular? Here are the Best and Worst Times to Post It
• Guido van Rossum: Invitation to try out open source code review tool