Xtify faces competition from other location-based ad companies, such as San Francisco, Calif.-based Placecast, which runs geo-targeted ad campaigns, for instance pinging users with text messages when they are near a shop. Xtify says that the very fact that they have a background-running notification system is what differentiates them from the competition. In addition, the service is not reliant on getting a phone’s location from a carrier, nor is it using SMS, which makes the service cost-efficient, Xtify says.
http://www.nytimes.com/external/venturebeat/2010/07/31/31venturebeat-push-notification-platform-xtify-picks-up-28-98767.html
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