User blog comment:AwesomeOrange89/Image Licensing/@comment-2170536-20141025161019

Good blog. One rule of thumb I generally tell people is that if they can't (legitimately) place the image into at least one of the categories, they probably shouldn't be uploading the image.

The other thing I see all the time is the improper use of 'self' when it comes to screenshots of games or other apps. Just because you took a screenshot yourself, or took a screenshot of a specific element and photoshopped out the background yourself, doesn't mean you created the content. It is still the property of the app developer, and you still need to be using it with proper permission.