[9nGQluzmnq3M]

The article points to a Facebook patent for an "engagement metric" created at time of posting (that is, before user interaction) which specifically calls out "state of undress" as a factor to consider:

http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=H....

...and this metric is used to determine what gets shown in people's feeds.

[y04nn]

The patent link was not working for me, here is an alternative: https://patents.google.com/patent/US8929615B2/

[blaser-waffle]

They can patent an architecture?