Welcome to Gowallawalk! As you probably know, Gowalla has been acquired by Facebook, and the purchase was made for the technology and staff and not the data. As a result, Gowalla's API was discontinued, leaving this site with... well nothing really since it was dependent on Gowalla's API.
With this in mind, I took some of my free time over the course of a couple weeks to cache everything I needed from Gowalla to make static copies of the maps of everyone who ever used this site. That cache is now this site.
Gowalla was fun, and awesome, and now it's dead. This makes me sad, but at least our maps are preserved here.