Hacker News on 17 August 2012

• This is how Visa works
• Why I now, unfortunately, hate Hacker News..
• I Have 50 Dollars
• Twitter to Client Developers: Drop Dead
• Vim and Vi Tips: Essential Vim and Vi Editor Skills, free on Amazon today only
• Harvard cracks DNA storage, crams 700 terabytes of data into a single gram
• How We Nearly Lost the Discovery Shuttle
• A Tor of the Dark Web
• A Proposal To Improve Hacker News
• Light Table reaches 0.1.0