if you scroll down to the "Libreboot Installation" photo near the bottom, I'm the one in the hat!  this was taken backstage (aka "the speaker's room") of Libreplanet2016 https://web.archive.org/web/20160602173914/https://www.fsf.org/blogs/community/libreplanet-2015-high...
the photo was removed by waybackmachine's next capture :(