Let us try to understand this situation better with help of an example. Suppose you are looking for a kayak meant for fishing. Now there are going to be hundreds of brands for the same product (kayak in this case). So, how are you, as a consumer, going to decide which kayak would be best for you for fishing? One of the best ways to do this would be by reading fishingkayak reviews.
When you read some reviews on the subject of your concern, you are going to get a clearer picture of buying action plan in your mind. The more fishing kayak reviews you read, the more knowledge you will acquire on the subject and thus, these reviews will help you in making the final decision on which kayak you should put your money on.
would be of great help in this matter. You can also find specific product review sites that are going to be immensely helpful as well. Then, there are consumer forums and other information available, both online as well as offline, where you can get handy information and consumer feedback on a specific product. All this data collective data is surely going to help you in taking the final decision.