Abstract: Disclosed herein is a system and method for providing ‘response information’, which is information on usage comments, reviews, or evaluations written by existing users, so that a specific user who requests product information may easily and accurately know it in a shorter time, when the product information is provided through a network according to the request or search by the specific user, where the system includes a pattern extraction unit that extracts a reputation pattern including an attribute word corresponding to a specific product by analyzing one or more pieces of existing user's response information for the product for which product information is provided through a network, a summary information extracting unit that extracts summary information on the response information based on the reputation pattern, and a summary information providing unit providing the extracted summary information to be displayed for the user to read to a client.