The new Y! Maps Beta looks much cooler than the old one. The new mini-map in the corner is useful and helps you to keep track of where you are and give an easy way to zoom in and out.
The one problem I have with it is its not as detailed in some things as google maps / earth is. This is as far as you can zoom in to worthing without getting the error message. Thats ok because in google it just goes blurry and distorts that pic, not going any further in. With google though it still shows all roads, Y! doesn’t show any roads.
Its cool but stick with google.