I do not do this nor have I heard of it. If I were to ground my kids from facebook due to negative comments about me, it would probably be from the lack of respect demonstrated. If it were a factual account of a disagreement, I would not care. If it consisted of derogatory comments or status, I would probably ground them from facebook for lack of good judgment demonstrated by posting inflammatory or inaccurate information. Hopefully, they would learn that you cannot always take back what you say or write so you need to be careful before you speak or post.