Recently, I wanted to place a quite complex image map on several pages in a Joomla site.
Normally, you would enter the complete code of the image and image map into every article where the map should occur. My challenge, though, was that the image map would need to be updated regularly. Thus, I'd have to create the image map in Dreamweaver, and manually change every instance of the map. Changing the code in every article (15-20 articles) is a tedious process, so I needed a simpler approach.