Google is adding a feature to its search engine that lets users block out all links from specific domains in their query results. The feature is being rolled out on Thursday and Friday in English. Google is also considering factoring blocks into its search results ranking process, so that a domain that has been blocked a significant number of times may see its search relevance reduced in general. Users will also have a chance to review and manage their list of blocked domains in Google Account search preferences in their search preferences.”]