From time to time, we may encounter a subject in someone's journal or even a specific deviation that we would like to follow. The same concept exists in FB: once you've put your comment somewhere, you have a kind of subscription that is automatic. The concept, here, would be the almost the same, but manual: a "Watch" button.
It's not an evil place, basically, but as Boris Vian used to say: « The Hell, it's the others... » I don't want to bring back all the bloated f@#?~ckware of FB stuff here, but it contains a few good ideas, nothing more
The same concept exists in FB: once you've put your comment somewhere, you have a kind of subscription that is automatic.
The concept, here, would be the almost the same, but manual: a "Watch" button.