One of the most common requests we’ve received is for the ability to store a list of personal addresses on Google Maps — and now you can. To get started, click on the “Saved Locations” link in the upper right corner of the site and sign in to your Google Account. If you’re already signed in, this link will take you to your saved locations list — Google Maps will automatically save every location you search for. You can also go to the Saved Locations list to disable auto-saving of locations or to add, modify, or delete previously-saved locations.
An interesting post a must read further if your into Google maps another great way to use Google maps is something I saw on Google video a while back check out this clip here