1. A computer-implemented method for automatically extracting and displaying information about a product from a plurality of articles, the method comprising: in response to receiving a search query for a product, searching an index of articles that describe products for sale; identifying, based on the index searching, a plurality of articles from the index of articles that are responsive to the search query; obtaining, based on the search query, at least one price for the product and at least one image of the product from each of the identified articles by: automatically selecting and extracting a price for the product from a first article of the identified articles by: identifying a potential price in the first article; identifying a price signal associated with the identified potential price in the first article; determining, based on a proximity metric, whether the price signal indicates that the identified potential price is an actual price for the product; responsive to a positive determination, automatically extracting the actual price from the first article; automatically selecting and extracting an image for the product from the first article based on the extracted price; repeating the selection and the extraction of prices and images for other identified articles; and displaying, as a combined search result set, prices extracted and images extracted for the product from the identified articles.
10. The method of claim 1 , wherein automatically selecting and extracting the image for the product comprises: identifying a potential image in the first article based on the extracted price; identifying an image signal associated with the identified potential image in the first article; determining whether the image signal indicates that the identified potential image is an actual image for the product; and responsive to a positive determination, automatically extracting the actual image from the first article.