[jkaplowitz]

You lose the power to participate in Facebook-only groups, which are surprisingly prevalent in some places. I have very limited access to two communities here in Montreal that I'd otherwise get a lot of value out of, because their only online communication system is via Facebook.

I've told Facebook to pound sand for roughly their entire existence - never had an account even though I had the chance right after they expand beyond Harvard - and am considering whether life circumstances will increasingly force me (in practical rather than literal terms) to sign up.

A company in that semi-mandatory position deserves lots of binding rules to protect the rights of unwilling users, just as is true for electric companies since you rarely have much choice there.

Plus, I don't think Facebook's massive wall of several huge interlinked policies with soft-pedaled descriptions of what they do meets either of your A and B criteria, especially not when it's modally interrupting the user.