EDIT: This is no longer available.
free 2013 wander the world calendar is only available to the next few thousand people, so act fast! I always feel like a cheesy used car salesman when I write like that. I swear I'm not trying to sell you a lemon.
If you don't get a confirmation message, don't worry. They explicitly said that as long as you sign up before they hit 20,000 Likes, then you'll get the calendar, confirmation page or not.