Instructions: Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.
Input: This product is useful, I guess, if you have a very small enclosed area to heat, as it gives off only a very modest amount of heat even when set as high as it goes. It is not, as advertised, cheap to run. In fact it cost me as much as the gas bill for my entire apartment without reducing that gas bill more than a couple of dollars. It is made on the cheap. The plug doesn't even have a ground pole. I inadvertently bumped into it one day causing it to pull against the wall plug and fried both the wall plug and the heater's plug. I haven't used either since. I'm sorry I wasted my money on this product. I suggest you save yours.
Output:
Negative