SynchroSpot’s mission is to provide users with a whole new class of location-based mobile software. Location-based reminders allow users to input reminders into their phone and the phone will asynchronously alert them whenever they are near the given location with their reminder (e.g. Pick up milk the next time you’re at the supermarket). Advertisers and the user will also find the offers feature valuable. (e.g. A nearby clothing store offers you 20% off your clothing purchase if you stop in within the next 3 hours and show the ad on your phone). Advertisers can be large national chains or local mom and pop shops as even the smallest vendors will be able to manage their own ads via a web site.

http://code.google.com/android/adc_gallery/app.html?id=44