Hacker News on 22 December 2012

• GNU sed 4.2.2 released, maintainer resigns
• 125th Birthday of Ramanujan
• Producers of Minecraft Documentary upload their new movie to The Pirate Bay
• E17 is out
• Screenshot-proof images via temporal dithering
• School of Data - Learn how to find, process, analyze and visualize data
• Gitlab
• Developer CEO vs Sales Guy CEO
• "I've got nothing to hide" and other misunderstandings of privacy
• What Compsci textbooks don't tell you: Real world code sucks