MY UNDERSTANDING: From other threads it sounds that location is your account profile location if your tweet is not a geotweet (ie sent from mobile device or foursquare etc). Also, you need to include a geocode in your search to get a location field.
PROBLEM: I am not getting any tweets locations that are profile locations when using the following search (ie no tweets from my account: MikeUDUC) http://search.twitter.com/search.json?from=chrissimmons%20OR%20MikeUDUC&geocode=33.8958,-118.3957,100mi&callback=? But if I take out the geocode parameter, tweets do show up, but obviously no location since there is no geocode parameter. I've done other geocode searches, but have yet to get a tweet that is not a geotweet. My best guess is that the search is not recognizing profile names as a geolocation. I have tried changing my profile to San Diego, CA, and San Diego, California but neither work. Also, my location did show up once, but mysteriously it never showed up again. Twitter voodoo I suppose. RELATED QUESTION: Is it possible to get the profile location without using a geocode parameter? Perhaps by using users/search? -- Twitter developer documentation and resources: http://dev.twitter.com/doc API updates via Twitter: http://twitter.com/twitterapi Issues/Enhancements Tracker: http://code.google.com/p/twitter-api/issues/list Change your membership to this group: http://groups.google.com/group/twitter-development-talk