You can create and link to custom maps on Google now. It’s an easy to use slick interface that would be useful for real estate agents interested in making a tour of their neighborhood. Parts of your tour will also pop up in searchers results, so don’t forget to put a link to your homepage. Actually useful for marketing? Only if you do it “right” and make some interesting tours. It’s like websites – every agent has one, but only a few (like Marlow) have great ones.
Non-agents (the home buying / renting public): it looks like it’ll be a great way to get to know a neighborhood once more maps are created.