Gowalla Inc. released their official app for Windows Phone last night on the Marketplace continuing the recent flood of official apps for Windows Phone. Gowalla is essentially a social network/travel guide combination that lets users check-in and share their favorite restaurants and sites around the world with their friends and family. You can even add pins and rewards to your passport.
Extended social integration with Facebook, Twitter, Tumblr and Foursquare mean that you can share your journey’s and photos with all of your friends. The app is free and can be found in the Marketplace by searching “Gowalla” on the Zune PC software or on your Windows Phone.