Apparently Google has stopped using Venafi (which forked) as a CT log and switched to... Symantec?!pic.twitter.com/jLI0Fx9zYT
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
But Google recently bought a root from GlobalSign, so I suspect their days of relying on Symantec are numbered.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.