Wonderful addon. Important functions especially for any site which is not tiny or simple. Simplify user experience! The admin interface is easy yet detailed. It WORKS. But the best thing is Cedric the developer who is fast, efficient, courteous - top class. He could not have done more to help me.
Used it to add collapsible categories in the forum list. Easy to use, and the template style properties were a very welcome surprise. I was expecting to have to edit the css files to set the colors and stuff. I did need one css edit, but that was just to use a different icon for the collapse arrow.