Click on the link below and you'll see very interesting comparison. I won't judge any product based on this but, I'd say that I love the new interface of yahoo maps and the fact that it automatically updates the businesses based on you changing the location on the map. e.g. If you search for "target" in Sunnyvale, CA in yahoo maps and change city to Fremont, CA, it changes the results automatically. However in google, you must go search for "target" again if you change the city. Hats off to yahoo.

Google and Yahoo Maps Side By Side

Also, I'd thank Jon Aquino for wonderful application.