As explained on the Yahoo! Search Blog:
Starting today, you can see the Yahoo! local business shortcut when you search for a business, even if you don’t include your location in your query. You can also refine results by neighborhood or nearby city right on the search results page.
A nice feature not on Google or Bing is the ability to further refine by neighborhood. A horizontal scrolling menu of neighborhoods is offered and when you click a particular neighborhood the module refreshes on the search results page to reflect the top results for that area:
Google also announced today that it’s providing more information as you mouse over business locations, before you click on a pushpin. There’s a little preview that offers the business name, star ratings (if they exist) and a little review snippet: