记者：我一直以为必须要有全球定位系统（GPS）功能的照相机才能使照片具有位置信息（geo-code ）。
Reporter: I had always assumed that to geo-code my photos I needed a GPS enabled camera.
Gowalla是另一个服务功能与四方服务类似的站点，利用GPS在照片上定位，创建一个基于位置的用户体验。
Gowalla is another such service which functions in much the same way that Foursquare does, leveraging the GPS in phones to create a location-based user experience.
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