New Yahoo Site Explorer:
Site Explorer allows you to explore the entire pages index by Yahoo Search. You can view the most popular pages from any site, site map, and pages that Link.
http://siteexplorer.search.yahoo.com/

When Searching Yahoo News:
You can also search through video, audio, syndicated news, blogs of Corporations or various individuals.
http://help.yahoo.com/help/us/news/beta/beta-o8.

Ask.com, has come up with some great features, including a