I've just noticed that a thread of mine that someone kindly rated at 5, and someone else knocked down to 3 by some rating troll. And scrolling down the posts i see that it's happened to you Sara and to some others.
When i see a thread at 2 or 3 it's obvious whats happened ; apart from certain cases where a low rating has been deserved, some silly petty person has downgraded the thread thats all, so i guess a low rating means more that the OP is envied and should be taken as such.
Also a 5 star rating means either the person has rated himself or a nice friend has done it, so i do agree that self rating should be knocked out.
So thank you the rating troll(s) you boost our egos