Looks like Amazon.com is throwing in the towel on at least some features of its A9 search site, a perennial underformer in the search engine wars. Its Yellow Pages, with millions of photos of local streets and businesses that made the feature unique, are gone, and the handy toolbar is no more. So is the ability to keep a history of your searches. And you won't be able to get a discount on Amazon for using A9 anymore.
Source: Deep 6 for A9 Features