I don't trust @Twitter's opinion of what a top tweet is, and it keeps doing this, so it's time to delete it from my phone, I think.pic.twitter.com/YEWcaE1l4B
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
Hmm, could be worth a try (although I am a droid person). I've deleted it now, though, so sticking to tweetdeck. Let's see how long I survive...