A Yahoo! Sponsor Listing is a commercial web site that has paid for an enhanced listing within the "Sponsor Listings" box in certain categories of the Yahoo Web directory.
You must already be listed in the Yahoo! directory, before you can purchase a Sponsor Listing. Unless you're already listed, you will have to pay $299 ($600 for adult web sites) to have your site reviewed and indexed.
A Sponsor Listing costs $25-$300 per month for each category, for each individual web site.
I submitted one of my sites to the "Search Engine Optimization" category. Yahoo! charged me $100 per month for that particular category.
The following listing was displayed within the "Sponsor Listings" box at the top of the page:
Search Engine Optimization Strategies - features optimization ebooks and software. In the following 15 days, I've received a grand total of, wait for it...
Read the full story

|