There is an interesting lecture happening May 31, 6pm at the Main Library in San Francisco - part of an exhibit, Breakthrough: An Amateur Photography Revolution. that studies the cataclysmic changes in the praxis of photography in the digital age.
With a guest panel that includes Caterina Fake (!), Co- Founder, Flickr - it should prove to be an interesting night/discussion. Surely someone will bring up the whole Icelandic photographer Rebekka Guðleifsdóttira (Flickr name rebekka) episode with Flickr/Yahoo, et al. (backstory here and here) - and if not, they, should!
(thanks to Halle Merrill)