A former co-worker/friend who rags on my friends on Facebook...?

[EvilWoman0913]

If your other friends are going back and forth with him, they're as much to blame for your discomfort as he is. If you get the opportunity you should just post something good natured yourself before their posts get out of hand. In other words, stop it before it even starts. After a time or two they should all get the message that YOUR facebook page is not the place for THEM to be arguing or snippy or whatever it is they're doing. My adult daughter had a similar problem with 2 women she went to high school with. She did eventually have to delete and block one of them, but their disputes were VERY extreme. I certainly hope your "friends" aren't going to that point. If they are, then someone needs to go.