Windows Phone Thoughts: Probably the most comprehensive location based system ever

http://www.brains-n-brawn.com/default.aspx?vDir=nosink

This system uses GPS, Google, Messenger and a few other systems and API's to keep you about as up to date as you can be. "It uses a PocketPC with a CompactFlash to overlay your current position on maps generated from MapPoint .NET. Then, it will notify you through Pocket MSN Messenger if you walk close to a restaurant/store that is running a lunch special/sale, with a link to view the ad on Pocket IE. Also, it will show you other users that are nearby on the map and allow you to initiate a chat with them through Pocket MSN Messenger."



Thanks to Jimmy Dodd for the link.