I was watching a snooker game live stream on Facebook and noticed a FB friend being displayed as (also) Watching now:
They also mention it in the comments next to the video (which scrolls out of view of course):
This is innoccent, but suppose I'm watching something that I feel uncomfortable with letting others know. Can this be disabled, either through a FB setting or a tool?
I did not find anything in the FB privacy settings or through Googling.