Hacker News stories for 1 PM on Friday May 24, 2013

0.845 Tumblr Proves That Even Billion Dollar Companies Can Screw Up Mass Emails comments

0.577 Quadcopter/RC car combo, the B go beyond comments

0.281 Apple’s WWDC invite suddenly makes sense comments

0.193 Ifs and &&s and Plan 9’s Source Code comments

0.034 Show HN: Predicting the market with Google Trends comments