Yahoo - Internet portal company, and now major Search Engine, which was started with the past popular Yahoo! Directory.

Yahoo! Answers - Free question asking and answering service which allows Yahoo! to leverage social structures to create a bottoms up network of free content. See Yahoo! Answers

Yahoo! Directory - One of the original, most popular, and most authoritative web directories, started by David Filo and Jerry Yang in 1994.

The Yahoo! Directory is one of a few places where most any legitimate site can pick up a trusted link. While the cost of $299 per year may seem expensive to some small businesses, a Yahoo! Directory link will likely help boost your rankings in major search engines.

See also:

Yahoo! Search Marketing - Yahoo!'s paid search platform, formerly known as Overture. See: Yahoo! Search Marketing.

Yahoo! Site Explorer - Research tool which webmasters can use to see what pages Yahoo! has indexed from a website, and what pages link at those pages. See: Yahoo! Site Explorer.

YouTube - Feature rich amateur video upload and syndication website owned by Google. See YouTube.com.