Question: why would Mozilla replace an iconic Shepard Fairey logo with one of these?pic.twitter.com/eP5ncMBkvd
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
I'm not a big fan, that's pretty much the only one I liked, but I don't see the need to pull a 180 on such a recognizable identity.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.