Each of the major directories provide additional traffic to you your site. They also provide valuable incoming links, that enhance your Google PageRank, and perhaps your rankings on the search engine results pages (SERPs) as well. If your site isn?t listed in the Google search engine, becoming listed in directories is a great way to get your website crawled by the Google spider. Other search engine spiders crawl the major directories, on a regular basis, as well.
The Yahoo! Directory
Yahoo! Directory is crawled on a regular basis by the search engine spiders, including the Google spider. The directory may offer a quick entry into the Google listings for many websites.