Hacker News on 29 June 2011

• Sal Khan has started videos about Python
• Dotjs — hack the web
• The Tale of OpenGL vs. Direct3D
• Why is European broadband faster and cheaper? Blame the government
• First Night With Google Plus: This is Very Cool
• Guide to Programming Clojure For Beginners
• Global Interpreter Lock, or how to kill it
• Show HN: Can anonymous chat within identified groups create better discussions?
• Wizards of bullshit: How Forbes turned $6.5 million into $20 billion
• JsPlumb - pipe your UI elements together