Instruct: Classify a given review into positive or negative sentiment.
Query: Pretty Good Scale

We've used the scale, not extensively, but with some regularity. Its very sensitive but weights tend to vary by a few pounds, not sure why. The abiltiy to save your profile and look at your weight over a period of time is still a very useful and attractive feature. It was a great scale for a great price. I would recommend it but not if you're going to be tracking your exact weight.