In 2019 we launched the ApacheCon Photo Gallery - please check it out and request to upload your photos there! https://photos.apachecon.com/
Immaterial of how or where you post your pictures, we do ask that you tag them with apachecon. We also ask that you tag them with the approved show-specific tag, like ApacheConEU2009 or ApacheConUS2009. Thanks!
http://bighugelabs.com/flickr/profilewidget/group/random/000000/ffffff/374844@N23.jpg
Flickr users can post and view ApacheCon pictures in the Apachecon Group. Flickr is the most widely used group by ASF folks currently.