Unfortunately, this formerly reliable method of getting listed in Yahoo seems to be dead. I have used it a few times over the last month to try to get some new pages listed in Yahoo and there has been no action at all.
Previously, you could easily slip through the back door in Yahoo by setting up a blog on blogger.com or another blogger website. Then set up a MyYahoo page and subscribe to your own blog on that page. It was simple and fast. Then all you had to do to get a page listed was to blog that webpage with a link to it and presto - you were listed.
Unfortunately, this method was the subject of that old internet problem - spam.