Hacker News on 7 September 2012

• A proposal for improving HN : it should cost a user Karma to post
• Tough times on the road to Starcraft
• Dan Weinreb passed away
• Damn Cool Algorithms: Cardinality Estimation
• Rich Hickey: extensible data notation
• Twitter is the Benjamin Button of startups.
• Things I, as a designer, wish more tech startups knew
• Chinese company uses leaked photos to copy, patent iPhone 5 design
• Show HN: My first Mac app, Foreman, free and on Github. Would love feedback
• Kevin Rose Interviews Elon Musk