Note: this post is from 2007, outbound links may be broken.
Google Maps Click and Drag to change route
Google Maps – Drag to change route
Google Maps has improved its directions feature dramatically today by adding “Click and Drag”: after laying out a route, click and drag any point to have Google Maps recalculate the route with updated distance and time. It works great when you don’t like the suggested route, want to take a detour or need to avoid traffic jams and the like.