I have used this twice -- on the FIRST Joomla! site I worked on and again, recently. It was easy enough for a novice to figure out in spite of it's complexity! Now that I have some more experience, it is a piece of cake! If there is anything difficult, it is that there are an amazing number of options and functionality that can be used. I spent a bit of time yesterday just reviewing all the demo maps and I was absolutely amazed at what could be done. For both the sites I have used this with, it was simply to show client locations. From my first use two years ago, it appears that a lot has been added to it. I have never had a problem. And, it's responsive!