I can see it too → https://i.imgur.com/UeMHPys.png Clicking the “Send internal feedback” link triggers an error in the JavaScript console that says “ReferenceError: Can't find variable: FEATURE_STRING” while clicking the “Show Consoles” link simply toggles an internal state that apparently makes a development console visible to whoever has access to a debug UI. I found "gfeedback.js" but following the code all the way down only results in a request to https://www.google.com/tools/feedback