So I'm reading 1 star reviews for this particular book (which I'm really enjoying, by the way), and can't help but notice several of those bad reviews go on to praise another author in the same genre. Let me just say that if you bash a book and then go on to mention some other author who does it way better (in your opinion), you tend to look like you're just bashing for the sake of pumping up the other author, even if that's not your intention, which kind of discredits your opinion. And when it's the same author being mentioned over and over, it looks REALLY bad. Just sayin'.
Word of advice on writing reviews, leave other authors out of it and focus on what it is you liked or disliked and leave it at that. You may think you're helping, but if some other author really is better, it's easy to discredit said author by looking like you're a minion of theirs looking to take out the competition.