1. A method for comparing two or more products, the method executing in a system that includes a processor coupled to a display and to a user input device, the method comprising: accepting a signal from the user input device to select two or more products; displaying items in a table on the display screen, wherein the items include an indication of the two or more products, wherein the items are arranged along a first side of the table; displaying two or more keyboard categories along a second side of the table; displaying user-generated keywords within the table, wherein the user-generated keywords describe a user opinion of an item, wherein each keyword of a particular keyword category that is associated with a particular item is displayed in an area that intersects a row and column defined by the particular keyword category and by the particular item, wherein if a keyword is common to multiple areas the keywords are further arranged to be in a common horizontal or vertical alignment within the table; and displaying a keyword usage indicator adjacent to at least one keyword, wherein the keyword usage indicator indicates a popularity of the keyword used in a review.