Photography at the 2009 ACA
I have been unable to find out whether photography of presentations will be banned at the 2009 American Crystallography Association conference. I am doubtful there will be any information on the issue, but felt it was important to bring up nevertheless.
I have never felt comfortable when someone in the back of the room photographs each slide of a presentation. I also have not had the guts to ask them to stop.
A conference that promotes speakers to share new ideas and information is exciting. However, if the speakers are worried about being scooped then they will hold back and simply regurgitate their most recent papers.

Photo by runningafterantelope
The same reasoning applies during the poster sessions. I do see some people asking permission to take photos of posters. I have also seen thieves attendees taking pictures while the presentations were going on with the owner of the poster not present. Plan on your poster being photographed.