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 could understand maybe while they're in their infancy like 05' to 2010 (Though I believe they went through change in ownership so that era is kinda different) I could let it slide maybe in back in 2012. But this has been going on for years and it's really not okay