Search & Explore Twitter in a geo way!
TwitRadar let you search and explore Twitter geographically, specifying where to search, nearby or globally, and what to search by keywords.
Includes native support for:
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* YouTube Video player
* Blip.fm Audio & Video player
* TwitPic Image viewer
You can access your timeline and explore it geographically, but this version does not support 'tweeting'.
iMetanoauto 
InstaRadar