The tweet appears on the shirt exactly as it does on the Web. The message, the username, the user picture, and the time (4 minutes ago, 2 hours ago, etc.) are printed on the front. You can also customize the size and colors before placing your order, which is fulfilled by a company called Printfection. There are also a few community features, like being able to see the latest shirts people have created and the most popular ones.
Much like Status King, which turns Facebook status updates into t-shirts, TWItoShirt is a simple, no-overhead concept that should be a nice small business for the owners. Meanwhile, the t-shirts seem like a must-have for Tweetups and other Web industry events, as other attendees will surely get the humor. For a night out on the town with non-Tweeting friends though, you may want to leave your TWItoShirt at home.