I’ve changed the commenting system on this site to use WordPress/Jetpack instead of Facebook comments. Gives me a bit more control, and automatically closes comments after a certain period so I don’t get people replying to old posts. The Facebook comments system didn’t notify that anyone had replied, so I was surprised to see quite a discussion happening on some of the politics posts when I checked a while back.
This being a personal website means there’s no obligation for me to provide a commenting system at all. If it gets filled up with spammers, I always have the option of switching it off.