American Winery Guide is a social networking site for wine drinkers. It has heavy use of google maps.
Wine drinkers can search for wineries on the United States map using various set of filters.
It also uses a KML ( google earth ) file to load various regions of wineries in the United States.
Users can create a itinerary for wine tasting by drawing using the itinerary creation tool which lets users draw the itinerary on a Map, by adding wineries and events from their favorites. Users can share their itineraries with their friends using social networking features of the site.
Ubercart is used to sell various level of memberships to the winery/business owners.