Flashblock seems the best solution for the Flash auto-play problem: https://addons.mozilla.org/firefox/addon/433
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
Flashblock seems the best solution for the Flash auto-play problem: https://addons.mozilla.org/firefox/addon/433