It started without any pretense or clear definition on Friday, March 11th, with this post:
Chris Doran created the group
A week later, Friday, March 18th, 2 a.m., and the group now has 654 posts. It also has a name:
“SENDAI EARTHQUAKE FRIENDS & FAMILY LINK
and a description:
Euan Millar THIS GROUP WAS SET UP TO LINK PEOPLE TO MISSING PEOPLE. It is run by English teachers who work, or used to work, in Sendai and Miyagi. ALL MEMBERS please check locations of missing and provide as much information as you can. First names, Last names, Location (address if possible), link to an image uploaded to your Facebook photos of the missing person. We will do our best with what we have, but the more info you offer, the better.