Philip Arthur Moore joined Automattic midway through October. Just a week or so later he attended the Automattic meetup in Budapest, where almost one hundred Automatticians met in one place. Moore posted the photo you see above, as well as his thoughts and reflections on the event, which you should read.
So wait, how many was it? You said “over 100″ in the title” yet in the text and linked site it says “almost 100″
::confused::
Should have said “nearly” in the title, my mistake. Fixed.