One of the most common problems ecommerce web sites have with rankings is that portions of their web sites are not included in the search engines. The cause can be any of a variety of reasons like complicated URL strings to slow server response or lack of a proper internal linking structure. If Yahoo can’t find your pages, they won’t get into the search results.

So Yahoo offers the option of submitting many URLs at once using Yahoo’s free submission service at:
http://submit.search.yahoo.com/free/request.
Registration for a Yahoo account is required, but free.

Here’s how it works:

Create a list of all the URLs you want indexed in a text file and name it something like, urllist.txt (Yahoo’s suggestion). You can also provide a compressed file and call it urllist.gz.

If you are providing a plain text list of URLs to Google Sitemaps, then you can use that same file for Yahoo. Place the file in the main directory of your web site and submit the URL to the Yahoo free submission form at: http://submit.search.yahoo.com/free/request.