Instruct: Classify Amazon reviews into positive or negative sentiment
Query: piece of junk

like another user, the plastic "teeth" or whatever you want to call them, the plastic pieces that are on the bottom of the glass part and the base of the unit that end up spinning the blade, broke after about 10 uses, never blending ice or anything more than milk shakes. pathetic.then you read about motors burning out. give me a break.avoid.i'll never buy another black and decker product ever again.