Abstract:
Methods, systems, and apparatus include computer programs encoded on a computer-readable storage medium, including a method for providing content. A request for content is received from a user device. A content item is identified for delivery to the user device responsive to the request. A location of the user device is determined. A threshold distance is determined that a user is likely willing to travel when visiting a physical location associated with the content item or content sponsor. A bounding region associated with the location of the user device is identified. Location extensions are identified that are associated with the content item. A determination is made when one of the location extensions is included in the bounding region and when a distance between the location extension and a current location of the user is less than the determined threshold distance. The content item is augmented with the one location extension.