Question: You are considering whether to buy a product. You look at the reviews. Would the following review decrease or increase the chances of you buying the product? Review title: Ouch! Product review: One? And Justice for All? Why is this recording even listed under the category "music"? No way do these guys stand the test of time.
Answer: decrease

Question: You are considering whether to buy a product. You look at the reviews. Would the following review decrease or increase the chances of you buying the product? Review title: One of those "must haves" Product review: Doug Hall does one great job of giving you theory and practical application together in an easily understood form. This is the type of "how-to" that you can be easily implemented.
Answer: increase

Question: You are considering whether to buy a product. You look at the reviews. Would the following review decrease or increase the chances of you buying the product? Review title: Yeah, but ... Product review: Mr. Fein does a great job of retelling many familiar Rock and Roll myths as well as a few outright lies. He really did his homework - it is just too bad his dog didn't eat it
Answer: