This document discusses proximity marketing using the location-based social networking service Gowalla. It provides an overview of Gowalla's features such as check-ins, photos, and sharing locations. The document then outlines how proximity marketing through Gowalla can be used to drive traffic, gather customer data and loyalty, and create brand awareness. Businesses are encouraged to claim their listing on Gowalla to engage customers through customized check-ins, rewards and content.