To anyone thinking it was a good deed: please remember that later Google used similar techiniques against other browsers, like Opera. They showed a warning about an "unsupported browser" but if the user changed user-agent to Firefox or Chrome, everything worked. Another example is Web version of Skype which is very picky and doesn't work in many browsers, like mobile browsers, or slightly outdated Firefox.<p>For example, tomorrow Google can implement a DRM that would require a plugin that works on Windows, Android (with Google Play Services) or Mac, but not on Linux. After all, Linux is not a DRM-friendly system (allowing the user to hack anything is not what copyright holders want), and almost nobody uses it on desktop, so why bother supporting it? Or Google can use it against new, not yet very popular browser, to slow its adoption.