[PCheese]

You do not necessarily need a Facebook account to post on the comments plugin. See the "other login providers" section on the docs: https://developers.facebook.com/docs/reference/plugins/comme...

[droithomme]

That is using Facebook, and it makes use of the implicit, non-consensual Facebook shadow accounts that Facebook creates for all anonymous users, who are extensively tracked across the internet.

Many people have blocked all domains associated with Facebook in order to maintain privacy and thwart their internet-wide tracking.