This document discusses location-based marketing (LBM), which uses a customer's precise location to provide relevant marketing content. It begins by defining LBM and explaining why marketers should care about it. Then, it provides examples of how some companies have used LBM campaigns. It describes the technologies that enable determining a customer's location and obtaining nearby context. Finally, it outlines some key vendors and services that can help marketers implement LBM campaigns and recommends how to get started testing LBM strategies.