Sometimes the following works to obtain a free directory listing in Yahoo.
http://au.docs.yahoo.com/info/suggest.html
It will not give you a listing in the US Yahoo directory, but it can give you a free listing in their directories for other countries. I've had this work even if the site is a US site. Does not always work, but it is a nice way to potentially save 300/yr
Anyone else try this? Have comments.