I'm using the latest Twitter app by Twitter Inc. 3.2.1 and I can't seem to be able to add location to my tweets. And yes I have all the location settings turned on; GPS, Google location services, and the mobile network and wifi detection settings. My tweets just get sent like I never even touched the add location button, and I've tried many times, on another account too. I'm using the Samsung Galaxy Nexus, but I'm posting this in the general Android forums because I'm assuming this updated twitter app isn't just for Galaxy Nexus. And there maybe problems with other phones, I've looked in the reviews and no cases so far as what I've described above.