Patent ID: 8725719

Claim:
One or more computer storage media having stored thereon instructions that, responsive to execution by a computing device, cause the computing device to: receive an identification of which one or more portions of a web page include structured data that can be subscribed to, the web page including structured data as well as other non-structured data portions, the structured data including a parameter identifying the structured data; display a visual indication of which of the one or more portions can be subscribed to, the visual indication comprising an icon; receive a request to collect structured data in the web page; receive a request to subscribe to the structured data; display a link identifying the web page; store the structured data in a data store for offline use of the structured data; and responsive to storing the structured data in the data store: retrieve a current version of the web page; compare the retrieved web page to a previously stored version of the web page; detect that the web page has changed if the current version of the web page and the previously stored version of the web page are not the same; and notify a user of the computing device that the web page has changed only if the structured data in the web page has changed, the instructions further configured to: display the link in a first manner if the structured data in the web page has changed; display the link in a second manner if the structured data in the web page has expired; display the link in a third manner if the structured data in the web page has not changed and has not expired; and display the link in a fourth manner if the structured data has an error.