Instruct: Classify Amazon reviews into positive or negative sentiment
Query: FLAKY, not dependable

I don't enjoy giving negative reviews. It is just not "Fun".But, I have benefitted greatly from others reviewsand I feel responsible to "give back" by sharing my experiences.I have purchased 4 different "Bluetooth wireless USB adapters".THIS was the most expensive of the four ... and the WORST!I have tried ALL of them on the four computers in my home ...!TWO worked great. ONE worked "O.K." ...THIS ONE ... is USELESS!{Did my review help you decide?}