There should be a ning setting for groups like this clubhouse, where the administrator can check or uncheck a box to allow or not allow the star rating thing. If there isn't, maybe you can suggest such an option to the ning people.
Once something like this starts, it just goes in circles because people know someone is being mean by clicking one star and they let their minds wander, guess who it is and then downgrade their videos on some kiddie evens up thing and before you know it, no one gets any pizza. (Simular thing of neighors guessing who called in a pizza delivery to their house and ordering pizza to be delivered there... result was no one in the entire neighborhood could get a pizza delivered from any place in town for a long, long time.) So if anyone gets downgraded, the worst you can do is guess who's doing it... just let it slide, don't give them the satisfaction of knowing it hurts your feelings, just take the support and friendship as offered by others and ignore the petty crap. Just my opinion.