We were wandering round SF with my parents, not quite sure what to do to pass the time until dinner, when I looked at my phone and saw Rev Dan Catt's tweet about the Flickr Turns 5.25 party.
Apart from the occasional concern that they were the oldest people there, they had a great time! A couple of free beers and some t-shirts later, and they were happy. (OK, it was mostly the free beer.)
Hurrah for the Good Ship Flickr! (And thanks to Cal for using his last Polaroid for this photo!)