Hacker News on 15 March 2013

• Procrastination is Not Laziness
• Show HN: Weekend project, Intro.js
• Federal Judge Finds National Security Letters Unconstitutional, Bans Them
• Mailbox Is Joining Dropbox
• Google is about to learn a tough lesson
• Smart Guy Productivity Pitfalls
• Google backslides on federated instant messaging, on purpose?
• What it’s like to die
• Programming Cheat Sheets
• Dropbox Acquires Mailbox