I like steam as a user but it's still proprietary software and I'm slightly concerned about what is going to happen when Gabe Newell steps down as president and ceo of Valve.

Thanks, I didn't know that all this stuff is enabled by default. They don't even care to inform their users when you install firefox...

Can you give an example for this user tracking? I'm using firefox and I can't think of anything that isn't opt-in.