The document reviews group buying and location-based services sites, analyzing trends from their past rise with social media, to their present high user adoption. It notes that networks are starting to adopt group buying concepts, and that future sites will need niche offerings. The document also identifies gaps such as a lack of integration across walled gardens, smaller markets, inconsistent incentives, insufficient mobile integration, and weak location-based mapping features. It suggests addressing these gaps through strategies like volume discounts, small market models, rewarding user behaviors, fully-integrated mobile apps, niche community sites, enhanced mapping tools, and improved social media integration.