Two things that local search engines have been striving to improve are business listing relevance and populating them with deep content. Yahoo Local is trying to improve both by allowing any consumer to submit business information.
With that said, there is an editorial review process. You can be sure that the Yahoo team will make sure the information is both correct and relevant before approving any submission.
Yahoo has arguably been the local search leader between the “big 3” (Google, Yahoo, MSN), in big part by being the forerunner of user-generated content. Users have been able to place ratings, reviews, and even photos in Yahoo Local for quite some time. Like others, they collaborate with third-party rating and review services such as InsiderPages.
It’s not perfect, but it gets some good use out of me.