Google Static Maps API
Today Google announced a Static Maps API that allows anyone to create a Google Map.
Google have of course had a Google Maps API for a couple of years - but the new API means anyone can create a static map with no programming involved. The wizard just asks you to enter an address, pick the size of map you require and you are then given the address of a static image that you can post to your site.
This is a great idea with just one serious drawback - the generated image is restricted to 1000 unique request a day.