Instruct: Classify Amazon reviews into positive or negative sentiment
Query: worse than trash

i bought some of these for potentially cooling some home audio components in a rack system, assuming the Compaq name would offer some insurance against them being garbage. oops.1. the blades are cloth about as thick as a sheet of paper2. effective wind range on this is about 6"3. the weight of the head unit is such that is slowly falls down/over without support when running - it's not staying anywhere without tape!4. this has the worst noise-to-wind ratio i've ever experienced - the motor is stupidly loud5. the fan head transfers serious vibrations all the way down the shaft into your USB port and/or computer. it would probably be a better massager than a fan, in terms of transferred vibration.6. the copyright on the instructions is 2003, and there is no notation of watts/amps used7. i wouldn't trust this plugged into any computer or other valuable electronics.