When you keep getting tweets about 0 notifications for your YT vid upload so you post a community message but no one can see that either. Nice
pic.twitter.com/JeiLu0i1F2
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
Thanks for the detailed info. Could you try clearing cache and cookies of the browser, here's how: http://yt.be/help/V8qD . Also, try using a different browser/Incognito mode. Let us know how it goes.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.