@kevinmarks markup on google webmaster blog looks right to me. http://googlewebmastercentral.blogspot.com/
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
@kevinmarks markup on google webmaster blog looks right to me. http://googlewebmastercentral.blogspot.com/