Umm... I play Pandora & Spotify all the time in my car from my Android phone. Navigation cuts into the music with directions, too.
Just to play the total Devil's Advocate here: How did you think you were paying for using Facebook? That content you generated as a user stopped being yours the moment you generated it for Facebook. Your status updates are the quarters that go into the slot to make the machine go. That you can get that data back in *any* form is just Facebook being gracious.
For what it's worth, the headline is inaccurate: This is not a Mozilla project, nor even a Mozilla Labs project. Chromeless is a Mozilla Labs project, on top of which Webian Shell is built. Webian Shell is a nifty looking thing, but it's not an official Mozilla Statement on the FUTURE OF APPLICATIONS and a CHALLENGE TO CHROMEOS or whatever crap is being assumed here. It's just some dude playing with a concept.
And besides, finding life that uses oxygen means we're more likely to find life similar to ours, so we can have sex with it.