Years ago, I put together this picture using Poser.
It's been up on my website for years. A few weeks ago, I noticed in my server logs that the image was being accessed indepently of the webpage it's stored on. The moderator of a football forum was using it as his icon.
Digging a little further, I found my image as the logo for a professional Sports fan page.
Now, their own Fair Use policy says:
The articles, photographs, data, and other content ("Content") appearing on or available through the websites operated by Scout Media, Inc. ("Scout") are protected by copyright pursuant to U.S. copyright laws, international conventions and other copyright laws. All such Content is protected by copyright and are owned or controlled by Scout or the party credited as the provider of the Content. You agree to abide by any and all additional copyright notices, information, or restrictions contained in any part of the websites operated by Scout. Copying, storing or redistributing any Content is expressly prohibited without prior written permission from Scout or the identified copyright holder. Logos, graphics, sounds or images from any website operated by Scout may not be copied, stored or retransmitted unless expressly permitted by Scout prior to use.
Yet, they scarfed the Steele's Spartans logo from my site, and stuck on theirs with not even a mention of where they got the logo from and not even a request to me for my "prior written permission."