Patent ID: 8850308

Claim:
A computer-implemented method, comprising: retrieving, by one or more programmed computing systems, a Web page of a target Website of an online merchant, the retrieved Web page including information about one of a plurality of products available from the online merchant and having an associated textual document that represents a structure of the Web page and having a distinct visual representation when displayed, wherein the plurality of products share one or more common attributes and have differing values for at least one of the common attributes; generating, by the one or more programmed computing systems, a task for one or more humans to identify information of an indicated type in the visual representation of the retrieved Web page, wherein the information of the indicated type includes a value for the one product for the at least one common attribute; submitting the generated task to a task fulfillment system for human performance, and receiving, from the task fulfillment system, results of the human performance of the generated task, the received results including the identified information of the indicated type; mapping, by the one or more programmed computing systems, the identified information from the received results to a corresponding location in the textual document, the corresponding location identifying a structural element within the textual document at which the identified information is stored; retrieving, by the one or more programmed computing systems, information of the indicated type from other Web pages of the target Website that are distinct from the retrieved Web page by using the identified structural element to retrieve information from associated textual documents that represent structure of the other Web pages; and providing one or more indications of the retrieved information.