Instruct: Classify Amazon reviews into positive or negative sentiment
Query: great service from amazon, shame of sharp

This camera worked great at the begining, but just as what others said, problems like pixelation, blank spots across the screen.and started getting worse during playback. obviously there is a serious design problem with the VL-WD255U based upon many user's similar complaints.But the amazon service is really great, they send me the replacement right after i called them in express package. ThanksI hope this time i am not so bad luck, otherwise i will turn to sony.