Gowalla (for iPhone)

Gowalla (for iPhone) Gowalla is a free smartphone app (for iPhone, Android, and BlackBerry) that taps into a user's geo-location data to suggest places nearby, from service industry businesses to museums and landmarks. Gowalla users can virtually "check in" to a location when they visit it, and their account will record and save the activity. They can also see suggestions from other users about various locations, or leave their own tips for others to see.
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