See other comments on this thread about fair-use image bots, which have caused considerable anguish on Wikipedia. They run fast, and template many people. Fair use is important, and there are many images without a compliant licence, but most people have no idea what counts for fair use.

EG: I have some toys. I take a nice photograph of those toys. Can I release that under a completely free licence and upload it to wiki? There's a famous statue in my home town. I take a nice photo of it, and release it under a free licence. Can I upload that to wiki? What about a building? etc etc etc.