Reader staffers share stories that fascinate, amuse, or inspire us.

Hey, did you read:

• That Second City cofounder Bernard Sahlins has died at 90? —Tony Adler

• About the addictive positive-reinforcement feedback loop of social media? ("All those retweets, likes and favorites give us a little jolt . . . that pushes us to keep coming back for more.") —Steve Bogira

• About death cafes? —Kate Schmidt

• About John Horne Burns, the great—and forgotten—gay novelist of World War II? —Aimee Levitt

• That this weekend was the worst of the year violence-wise? (via @jeromeludwig) —Gwynedd Stuart

• That Vladimir Putin denies stealing the Super Bowl ring of New England Patriots owner Robert Kraft? —Tal Rosenberg