Hello,
I've recently received the inquiry of a photographer wishing to collaborate to our project,
who lamented that the photos are downloadable by anyone and do not have any particular restriction for their use. I explained that the Indicia philosophy is inspired to open source concepts, but this explanation didn't persuade him completely.
Have you ever faced this problem? Do you think that will be possible to add a feature that, in the process of resizing of the image, overimpress a logo of the project and/or the content of the caption, in order to respond to these kind of request?
Another suggestion was to write somewhere in the site of the project that the pictures cannot be used without permission of the author (or of the project manager). In case of legal problems, this short sentence could be used in favour of the photographer.
I personally don't like at all this approach, but in Italy there are many people doing photographs in nature that would greately contribute to our project, and finding a solution in this direction would be quite an important task.

Mny thanks,

Andrea