MapHook is a location-based journal and social networking application that is operated by MapHook Inc., a software applications development firm based in Dulles, Virginia. MapHook combines GPS and mapping technologies to allow users to create geo-tagged digital memories about events, locations, and activities. These geo-tagged "hooks" contain user reviews, anecdotal information, available business details, and user-created images pertaining to the selected location. These hooks are then published per user specifications to the public or select individuals. MapHook also displays points of interest that relate to Wikipedia articles, Groupon offers, or Yelp reviews within a user's selected vicinities.