Google 411

I found a very interesting article written by one Garett Rogers about the true reason for google to make the google 411 service in which you call the number and ask work the location of a business and it provides you the directions to such business. Apparently there isn't much commercial applications for it, but they are using the service to create a large database of recorded voices for voice to text recognition. Sounded pretty cool, the article can be found here.