Apparently @chrisdeerin has written a column. It's apparently excellent. You can find it on his timeline, apparently.
@johnmcternan @chrisdeerin I find that very hard to believe.
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
@johnmcternan @chrisdeerin I find that very hard to believe.