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: Good Subwoofer for 8" Product review: After much research, looking at this size subwoofer this seem to be the better pick for the price. Polk also has a good warranty, the sub i had before with mirage subnano lasted only 4 yrs. There seems to be a delay at time with certain network programs, but for movies it's very good as well for music..
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: Very Helpful Product review: This wall chart has most everything needed to learn how to properly play the violin and help learn to read sheet music.
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: Worst Book Ever....and He's a Book Agent?! Product review: Don't waste your time buying this one. This book was the most conceited, boring, and negative book I've ever read on writing novels. Each page is dripping with negativity, putting down "first time novelists" and using them as an example of everything that writers do wrong. Well, ahem, every author has been a first time novelist at some point. While his points--buried deep within mounds of superfluous chatter--may be basic, the book actually made me NOT want to write a novel at all. His points could have been made while at the same time encouraging (not discouraging) people to write. Shame on him for killing hope and inspiration. Stop writing books and go back to your day job, dude.
Answer: