Thanks Googlepic.twitter.com/X7FW4Iskr1
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 mean there's no place to go to see the list of ads currently running. You only see the ad if you are in the target audience
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.