Could Q's latest post about trips and whitelists be referring to Facebook narrative control/censorship techniques? since he last posted the biggest news seems to be the spat between Facebook/Cambridge Analytics spilling over both sides of the Atlantic.
There's an article about Facebook whitelists here:
http:// www.adweek.com/digital/consolidation-whitelist-threaded-collapsed/
From what I can gather the basics of it is if you use automated posting methods then you're at a huge disadvantage in terms of reach unless you're part of some preferential whitelist programme.