It depends if we're writing to learn or if it's a popularity contest. It's not the spirit of the review I value but the information it contains. I've learned more from cruel reviews than the nice ones. If somebody says that it sucks in a certain way then I can reflect on it. Somebody saying "w00t it's the best". Doesn't really help me that much. If somebody on the other hand is only trying to be mean, (which has never happened to me) then I'd guess it would come across and can/should be ignored.