Yahoo has launched a pilot program called "More Sponsors" in which it will add links at the bottom of Yahoo search results for more PPC adds. When a user clicks on one of the links it will bring up a page with nothing but sponsored search ads.
The feature is supported by Yahoo's Search Assist features (the search engine's suggestions feature). "For example, the consumer might type in 'Hawaii vacation,' and Yahoo! might suggest vacations packages or resorts," explains Laurie Sullivan on Yahoo's Search Marketing blog.