@tomayac Facebook are just the first site to not return the script unless the header is being sent, which is OK: https://t.co/xHUzMCf0wn.
@chrisdwheatley_ Turns out this is actually even required, not a magic header at all: https://t.co/AMEEIq5of5. #TIL https://t.co/p0Jl97ASuB
.@mahemoff’s rant quoted below on Google+ topics (https://t.co/M7uBpeVsR7) reminded me of my 2011 letter to G+: https://t.co/QMbwfvL4uo 💠https://t.co/tzAIDCtk0a