Super URLs

Here's a wish: I wish Amazon [and any other site] made use of URLs better.

That needs an example. To search for all the books by Ayn Rand on Amazon, I just punch in http://www.amazon.com/author/Ayn%20Rand. Or if I wanted to find a specific book, I would enter http://www.amazon.com/title/The%20Fountainhead. Even Google needs to do that, http://google.com/my%20search%20terms.

That's simple enough, so why don't they do that?

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