This work is licensed under a Creative Commons Attribution-ShareAlike 2.5 License.
The above kind of says it all. You are free to re-use the stuff on the site, I just ask that you plug where you got it from. I took all the pictures from workshops. If you are using the pictures as improv stock photos, which would be very sad for you, please plug learnimprov.com.
Here is a cute aside about copyright abuse. One day I was taking a very expensive workshop at a very expensive training center in a very expensive city. We were doing games, and the instructor was reading from a print out of learnimprov.com. I didn’t say anything during the workshop. When I mentioned it later they had trouble even linking on their website. They were just too important a training center. I never took another expensive workshop there. Very petty of me I know.