Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Worthless, broke quickly

I read good ratings and thought this would be a good vacuum since I have a small apartment that doesn't get very dirty. This seemed to work well at first, but after about 5 uses it choked on carpet fibers and stopped, and will not start again. I repeat: It broke because it couldn't handle vacuuming on carpet! The whole thing filled with carpet fibers and was impossible to clean out, which is a moot point since it stopped working entirely. Biggest waste of money I've ever spent. No wonder all my friends tell me to buy a Dyson (which I did).