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: THE NYlON CURTAIN IS BILLY JOEL'S BEST MUSIC ALBUM EVER! Product review: I recommend any of the piano man and the voice from any Billy Joel CD albums out there. My favorite songs on here are "Allentown", "Pressure" and "A Room of Our Own" is the classic BJ tunes of rock'n roll!
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: "Mine must have been made on a Friday" Product review: Every time I tried to tear out a page, it ripped the darned thing in several pages. I took a course in jazz arranging, with weekly (or so) assignments. My teacher, catching on to the pattern...said that my book must have been made on a Friday. Ha! I will be upgrading to a little more quality product. Sorry, but this doesn't fit my needs. Staves are too big, not enough space between them. The binding makes the innermost inch or so unusable unless you tear it out...but I already told you about that problem.
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: Winston S. Churchill-writer par excellance Product review: I am just finishing this four volume set. It is amazing to think that much of this was written before World War II and held unfinished until this splendid man led his country to victory over the axis. This is not an easy read, but is certainly worth the effort.
Answer: