“Andrew Piotrowski received a Facebook friend request from a name he didn’t recognize and, as one does, promptly ignored it.

A few days later, the requester sent him a note through Facebook’s direct messaging tool with a photo attached, and something in the corner of that photo caught Piotrowski’s eye.

It was his childhood address, written, he suspected, in his mom’s handwriting.

Kristina Brunjai sent the request. She was trying to track down Piotrowski to tell him she had a letter he had written to her more than two decades ago, when she was a little girl living in war-torn Croatia.” (Chicago Tribune)