Hacker News on 6 January 2012

• Uncloaking a Slumlord Conspiracy with Social Network Analysis
• Damn Cool Algorithms: Fountain Codes
• Free Programming Ebooks
• How Trello is different
• Visitor.js
• How Yoga Can Wreck Your Body
• Open Source Visitor.js
• Minimum Viable SEO
• SOPA-Supporting News Outlets Aren't Covering SOPA
• Quick Salary Tip for Software Engineers