Hacker News stories for 3 PM on Tuesday May 21, 2013

0.634 Paperkey - backup your GnuPG secret key on a piece of paper comments

0.571 The NewsBlur Redesign comments

0.512 Union Square gets 5,000% return on Tumblr comments

0.137 Leaving Google’s silo: Alternatives to Gmail, Talk, Calendar, and more comments