I suspect this same effect explains some of the apparent success of deep learning image recognition. How much? https://twitter.com/juliagalef/status/893267535696613376 …pic.twitter.com/KUAPSY2cNc
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
Yes; and no one seems to be digging into its properties (afaik?). I have suspicions. Especially about the dogs :)