Hacker News on 4 April 2013

• Roger Ebert dies at 70 after battle with cancer
• Why Rackspace Is Suing The Most Notorious Patent Troll In America
• Facebook Home
• Stop externalising your life
• PostgreSQL 9.2.4, 9.1.9, 9.0.13 and 8.4.17 released
• Media Queries are a Hack
• Valve's GDC Talk: Porting Source to Linux [pdf]
• Association between muscular strength and mortality in men (2008) [pdf]
• Apple's iMessage encryption trips up feds' surveillance
• Are Bitcoins The Future?