It was suggested by @ClaireCaterer that we have a badge that can be attached to blogs for participants of the writing challenge.
Sounds like a great idea to me! I whipped up a quick badge that you can grab and place on your site and link back to writingchallenge.org.
Feel free to resize the badge as needed. If you’re using WordPress, the Image Widget plugin is a great way to put this badge in a widget area and link back to this site.