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: Copy protection Product review: This CD is useless to me. Don't buy CDs with copy protection. This is the last product by Kings of Leon that I will purchase.
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: Un-putdownable! Product review: A fascinating account of the search for an answer to a mathematical riddle posed some three hundred-odd years ago. The author gently eases the less mathematically able reader into how to understand mathematic theory in a way my maths teacher was never able to do 25 years ago when I failed maths so abysmally! The book is full of fascinating characters and tidbits of information. For example, the relation pi has to rivers! I nearly cried when I finished the book, I didn't want it to end.
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: DO NOT BUY THIS BOOK! WASTE OF MONEY! Product review: This book was the biggest waste of money! It was all about poor Gerry Starrett and her poor psycho son, who kidnapped and raped several girls, even murdering one. And oh how horrible his life in prison was. Not one word about the victims and their families. This book is very one-sided. I can't believe a family would even have the gall to write a book in defense of a murderous son.
Answer: