[Google Maps is extremely cool. Great interface. The maps are very good, however they are missing a few things, such as the direction of one way streets. It also does not support Safari yet.]

There also does not appear to be any indication at all of the scale factor. This somewhat limits the usefulness of the maps. That said, the graphical display of the map is very clean and nice to look at, and scrolling around without an http reload is really nice.

Google Maps