Simon Willison noted that GitHub sneakily released a new feature that seems to have some interesting potential:
GitHub quietly released a new feature at some point in the past few days: profile READMEs. Create a repository with the same name as your GitHub account (in my case that’s github.com/simonw/simonw), add a README.md to it and GitHub will render the contents at the top of your personal profile page—for me that’s github.com/simonw
Don’t know that I’ll push the self-updating limits that Simon is, but I might use it to add some additonal static text to my profile page.