I have found this very confusing as well. I am currently using photos from CreativeCommons.org -flickr for non-commercial use. Several librarians are creating book trailers to motivate students to read. In turn, we are instructing students on how to create them as well. We are attributing the photographers in the credits and making a statement that "All images are part of the creative commons community" and we are the citing url. We cite each photographer in the order in which they appear. The book trailers are being posted on campus websites as well as teachertube so that librarians and teachers can have access to them. And as I stated, they are being created solely to motivate students to read. But are these citations enough? As librarians we are, so to speak, copyright police, and we want to make sure we are following the way it is meant to be followed and not leave it up to interpretation.
Those of you who contribute photographs for non-commercial use, are we also supposed to be citing your license? For example, next to the citation of your photograph do we need to write -attribution, non-commercial, share-alike?
Do we need a link back to your specific photograph, or is the link back to creativecommons.org enough?
HELP!