A-GPS is adopted by mobile operation companies as the highest accurate position way in mobile location-based service. It combined the technology of GPS and mobile communication network.

GPS定位技术是目前移动运营商推出的移动位置服务中所采用的精度最高的定位方式，它结合了GPS定位技术及移动通信网络的优势于一身。

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Coordinates that are Shared with software developers, AD networks and location-based service providers in return for free location-based mobile applications and geo-targeted ads.

用户和软件开发者、广告公司和定位服务提供商分享坐标信息，然后获得免费定位手机应用和地理定位广告。

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For example, iPhone owners are twice as likely to see mobile web ads and four times as likely to see an AD while playing a game on their phone or while using a location-based service.

例如，iPhone所有者观看手机网络广告的可能两倍于其他品牌手机用户，并且在玩手机游戏、使用手机定位服务时看广告的可能性也四倍于其他用户。

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Last summer, Boston-based Where, which runs a mobile ad network and location-based recommendation service, opened a development center in Croatia to supplement its 18-person U.S. mobile engineering staff.

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Time magazine, for example, has formed a partnership with Foursquare, a location-based mobile check-in service, for the conventions, in which Time has provided content that users can unlock when they get to certain locations in Tampa and Charlotte.

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In future, more of this experimentation will take place on Facebook, which boasts over 150m mobile users and so ought to be the one network capable of creating a massive, location-based service fast.

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