Try this service: http://www.changedetection.com
There are a couple of ways to convert long URLs to short ones: bitly, Google URL Shortener, TinyURL, Goo.gl.
You can look at this wonderful youtube howto.
All you need is to use the embeded link from google maps, adjust the size, use firefox addon screengrap to get the image. You can then use the image, create a pdf of the image, etc.