Yahoo! has now launched a live preview of it's new home page and features. It's definitely more functional and solves quite a few UI problems after the integration of Yahoo! Answers into its search results.
Much like a search engines in South Korea that Google has found difficult to penetrate, Yahoo! is moving towards human driven questions and answers. In terms of global search practices, this is not anything radically new. But its certainly for the first time that a major search engine is moving towards community based search.