I'm all for making this forum all it can be, I can certainly see both sides to this one and the advantages and shortcomings of each.
This is a great place to be, though it can sometimes be intimidating for a new photographer. Some folks can make you feel (and they make you feel that way by.. you know.. literally saying it) like you shouldn't waste their time posting at all because your images aren't nearly as good as theirs, and this is, evidently, not a place for newbies.
BUT, those few are outweighed by the great many who genuinely want to see folks do better, and encourage and teach and lead the rest of us to improve our hobby (or profession in the case of some), and for those I am appreciative very greatly! When it comes to posting other peoples facebook pages, rules or not, I really hope people might reconsider that. By posting links to someone elses work you intend to mock there is no room for the 'second group' to do anything. What can you possibly teach if the student isn't in the room? Instead, it's fodder for the first group, which makes TPF a less pleasant place to us mere mortals. I really think anything that encourages TPF to head down a road of attacking for the sake of attacking, or belittling or degrading other people, is the wrong road to be on! Should it be a rule? I dunno, I don't think it needs to be, I think and hope that people would realize it's not helping anyone here and it's probably not the right thing to do.
I'll undoubtedly get flamed for my comments, but I will quickly point out two things. One, I'm not talking about negative C&C. I'm not talking about people who post constructive criticism and then get flamed with "But that's how I wanted it" excuses. I'm referring to folks who will offer nothing constructive, just a belittling comment or hateful remark. These are a very few and small minority, but they are not helpful and those kinds of threads only encourage that behavior. Secondly, I totally get the 'taking money' thing. But believe it or not, not every "Cliche-word Photography" facebooker is taking money. I know of several in my own circles that have never accepted a dime, they just gave themselves a name and exhibit their "art" on this seperate page. Whatever, more power to them! That may or may not be the case of others, but I think the benefit of the doubt should be given.