When useful features are _that_ hidden you only stumble upon them by chance. @ChromeDevTools #ChromeDevTools #RWDpic.twitter.com/SLHREqmViP
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
If you think that's hidden, you should see all the features that get revealed by holding shift before hovering / clicking ;)
Not sure what you mean but I’m pretty sure it not in the context of Chrome Version 58.0.3029.96 (64-bit) on macOS Sierra 
But in Chrome 59 and onwards you can also access screenshots from the Command Menu
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.