An Internet infrastructure that supports search operations that are restricted by user favorite lists, related user metadata, and user trends that are based on client-stored user favorite behavior. The Internet infrastructure contains a search engine server coupled to a plurality of web browsers resident on client devices that contain user/favorite lists and metadata. The search engine supports delivery of search result web links to the client device based upon a search string, favorite list, and related metadata. The search engine server gathers favorite lists and related metadata from the plurality of web browsers, anonymously and with user permission. The search engine server stores the gathered favorite lists and related metadata in a database that is associated with the search engine server, and delivers search results based upon the search string by putting restrictions on search results based upon stored data in the database.