It's obvious copyright infringement (unless you have consent from Microsoft, which I don't see included in the repo), and you don't want those asshats coming after you for something so stupid.
I tried to install this via the Chrome Web Store (using this link in the README) and was given the error: Package is invalid. Details: 'Could not load background script 'javascripts/background.js'.'
I'm not sure if this is just something wrong with my computer, or if there's a bug in the package.
_Operating System_ Windows 7 Ultimate N (x64) _Browser (UA-String)_ Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.17 (KHTML, like Gecko) Chrome/24.0.1312.52 Safari/537.17
Seems this feature is creeping its way into the chrome dev tools.. exists in chrome dev 12. And slightly modified with it's own button in chrome 13 canary.
However, their implementation seems kind of crappy atm!