At the very beginning of this year, Jason Sadler started a quirky experiment: I Wear Your Shirt, a project where every day, Jason would wear one shirt from one company per day and post his image on YouTube, Twitter, Ustream, and more. He would be a walking, talking billboard.

He also had an intriguing price structure: it only cost $1 for a company to have him wear its schwag on January 1st, $2 on the 2nd, etc. until December 31st, where the price would be $365. While each amount isn't that big, it added up. So did the attention.

The result: he sold out every day and will make over $70,000 this year alone ($66,795 + other contests and deals). Talk about a social media payday.

Now Jason Sadler, aka @IWearYourShirt, is going to see if he can double everything: the prices, the publicity, and the number of shirts by enlisting his new shirt-wearing partner, Evan White (@YourFriendEvan).

The plan is simple: double the price for double the publicity. Both will be visible on Ustream, YouTube, Twitter, and social networks, covering both coasts. They just launched their 2010 calendar. And in less than 24 hours, they've already sold 115+ days. That doesn't even include the contests and events they intend to hold in 2010.

We think that Jason and Evan's approach to social marketing is one of the most novel in the realm of social media. We've seen Jason's brand appear over and over again - clearly his grassroots advertising has been well worth the companies who have bought slots. We already wonder how he'll top himself in 2011