Totally agree. My to-do list for today already has a '10 things Amazon needs to fix with Kindle' blog on it, which I'll be posting later - that's one of my points. The only way to ensure fair reviews is to enable just verified purchasers to review and add a better red flag system to AuthorCentral - at the moment authors can only respond with another comment, which can only make things worse. There's no reason that their systems shouldn't automatically flags reviews where the content is 95% the same, either.