The SAD blog says that it's a project of Another Limited Rebellion, which according to their web site is a design and consulting firm founded by Noah. Here's a blurb from their home page:
Another Limited Rebellion is a socially conscious design and consulting firm dedicated to creating high quality communications in a sustainable manner.I especially like that the company philosophy includes, among other things, a "committment to work with clients who are not involved in the creation of cigarettes, alcohol, or weapons." How great is that?!
You can also buy this awesome Skull-A-Day t-shirt which was skull #10 in the series, the United Skull of America. While you're at it, vote for the image you'd most like to see on the next t-shirt.
This is so inspiring; it makes me want to commit to a daily creative exercise for a year and really test my limits. Although, *ahem*, maybe I should just try to work on my weekly illustration for Illustration Friday before I get all hepped up on delusions of grandeur. heh.