SH has told us that they monitor private messages and comments and they take action if a contestant is breaking the rules. It's just that they can't tell us about it so it seems like people are getting away with it. But I don't think they really are. What we "see" sometimes isn't and can't be the whole story. SH can't prevent people from doing something like that (unless the contestant gets banned). But they do tell us that they take action. I don't think that seeing a potential infraction means that it has been "allowed"... you know what I mean? Once it's done, it's done and action from SH can only come after the fact.