In reply to Peter Cralen.

To a degree, I agree. From my own experience, the AMP one sucks (not just from my attempts to implement, but the experience as a reader, with its stripped down approach leaving the good stuff out).

Facebook Instant is a little different (again, just from a personal opinion). My social stats in GA show that Facebook and Twitter are my biggest social drivers - the rest come nowhere near close. My biggest traffic driver remains search (over 60%), then my email subs, then referrals.

So, I don't really care about social too much. But given the majority of my social traffic is Facebook (and even that is a miniscule amount compared to the rest), I'm fine with making a seamless user experience on Facebook. See my link, click, stay on FB if you want, and get a good representation of my content while doing so. If it makes it more frictionless for sharing, better still.

Of course, like anything, if the stats show me FBIA isn't doing a lot for me, I'll disable and just leave responsive as the main option for mobile readers from Facebook.