Earlier quoted context omitted.
No, you can't stop using Facebook. On a lot of carrier provided phones, it cannot be uninstalled. And if you've signed in once, it will continue to run, auto update, and collect your information.
On every Android phone I've used, you can always disable the carrier-provided apps, so they won't show up in your app tray, or run any processes. iOS doesn't pre-install it, and I've no idea what Windows Phone does.
http://forums.androidcentral.com/verizon-droid-incredible/10...
[0] Corporate-provided and payed-for phone, so I was prevented from rooting because of "security reasons." Even after (or, especially because) the phone developed the surprising habit of snapping pictures at random times -- as evidenced by the distinct sound made by my DInc's shutter -- after the corporate-required malware was installed. I'm sure someone, somewhere really enjoyed the view of the inside of my pocket.