The document discusses Nearyoo, a location-based social networking service that allows users to share their real-time location through text messages. It can determine a user's location based on simple text-based location tags added to tweets, like ">Barcelona<" or ">EsadeForum<", without needing GPS. This takes advantage of the large existing user base on Twitter to provide location sharing in a simple, low-tech way using just text messages. The presentation outlines how Nearyoo works and its benefits for users, businesses and advertisers by building local communities around shared locations.