Yahoo

Yahoo! is one of the oldest web directories and portals on
the Internet today, and the site went live in August of
1994. Yahoo! is a 100% human edited directory, and provides
secondary search results using Google.

Yahoo! is also one of the largest traffic generators around,
as far as web directories and search engines go.
Unfortunately, however, it is also one of the most difficult
to get listed in, unless of course you pay to submit your
site. Even if you pay it doesn't guarantee you will get
listed.

Either way, if you suggest a URL, it is "reviewed" by a
Yahoo! editor, and if approved will appear in the next index
update.