A discussion on the IRC channel raised this point - we kind of forgot to keep track of the sources for the SCP images and relevant copyright information. Would it be of interest to do so, either as its own page or as extra data in the image template?
I'd love to see this happen, at least for new SCP entries, but I fear it'd be rather labor-intensive to track down all the old ones.
Feel free to credit the image creators in the discussion page, but keep it off the article page proper, please; it breaks suspension of disbelief rather badly.
Wiki policy on image copyrights is to remove or alter images at their original creator's request. If an image's owner complains to us about not being credited, we happily work with them to replace the image.
I fell asleep in the design class that covered this but I'm sure it falls under fair use. We don't hurt their market, we only use one picture, we don't claim the rights, and we're not commercializing, at least not that I know of.
As long as we're not making money (not just profits) from the site, we're fine under fair use. We also respect the creators' rights and take them down if/when requested (e.g. old Cassie).
Now that you mention it though, if something requires attribution (e.g. CC), we should be attributing it given how much we care about our own CC license. I have no idea how this could be monitored/policed in an efficient manner. Oh well.
If we need to find the origin of an image, we can always put it into TinEye: http://www.tineye.com/
It's worked for me eight times out of ten when searching for where an image came from.
Google Reverse Image Search works even more often than TinEye.