The copyright for the material presented on this site is owned by Unidei Oy (“Unidei”) or original author of the material. Unidei reserves all rights for its logo, other material being available under Creative Commons license.
Unidei logo:
Unidei reserves all rights for its logo.
All Unidei-produced material, except for Unidei logo, is licensed under Creative Commons Attribution-NonCommercial 2.5 Licence.

Material is licensed under Creative Commons Attribution-NonCommercial 2.5 license.
You can find a good many sites that serve pictures for a nominal (starting from $1) fee. For instance: