This application from German developer http://www.twibble.de/ enables smartphone users - including Symbian OS and Blackberry, to add location to Twitter posts. The application also has a desktop client as well which has built on Adobe Air. Something you may not be aware of though is that the team also makes available an API that allows developers to easily watch your twitter location in a map or Google Earth. Accoeding to teh developers it works great with positions sent via the iPhone or other GPS enabled devices!
You can grab Twibble mobile from http://www.twibble.de/twibble-mobile/
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ILMF 2012 - International LiDAR Mapping Forum, Denver, Colorado, Jan 23-25, 2012
Esri Dev Summit - The Esri Developer Summit (DevSummit) brings together developers and GIS professionals from all over the globe. March 26-29, 2012, Palm Springs, CA
Where2.0 - where the people working on and using location technologies come together to explore best practices and emerging trends in software development, tools, business strategies, and marketing. April 2-4, 20112, San Francisco, CA
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