If you have uploaded any files recently, and they aren't licensed, then beware. I am coming for you!
Over the next few days (probably starting on Wednesday), I'll be going through just about all of the just over 3900 files on the wiki, correcting licensing where I can, asking uploaders to co-operate where appropriate, and deleting old, unused or poor quality images.
Plus, if I haven't committed suicide by then, I'll be assessing all fair use files. Only those deemed irreplaceable can stay under this license, so I'll be tagging anything that can be replaced with a self-made alternative with this template (and corresponding category). If you see an image in there that you think you can make a replacement for, please do, then the original can be deleted.