Yahoo! offers a human-powered directory and offers its results to visitors. You can submit Url here http://submit.search.yahoo.com/free/request
The directory is supplemented by a web page index created by crawling.
The directory is an important channel in the area of search engine
marketing. It is popular and is used extensively by people to locate
sources of information. Moreover, the directory is a valuable boost to
your site for crawling and ranking in other search engines, as the
directory provides a high-quality link to your website. When a visitor
is looking for information on relevant sites, she could either browse
through the hierarchy of directories and subdirectoriesor search for an
appropriate directory through a search interface. As your site can be
listed in just one category, generally, the choice of category is an
important step. Choose the top category that your target visitor who is
making a search may select out of the different categories offered to
him/her. Select your target keywords and find out which categories
relate to those keywords. For submission of non-commercial sites, the
Yahoo! Express submission is recommended rather than the Standard
submission option. The results page in your chosen category will list
your site in two possible sections (for most categories). One section is
called "Most Popular Sites" and this is on top, while the second
section contains the remaining listings in Alphabetical order. Yahoo!
does not reveal how it includes certain sites in the "MostPopular Sites”
list. However, link analysis and click-throughs are likely to be
factors. You cannot pay to be included in this section. Certain sites
with sunglasses shown next to their name or an "@” symbol shown at the
end of the name reflect that Yahoo! considers those sites to be
excellent.
