It’s amazing how much information you can get from it if you want to. It has plenty of features, including text notes, hyperlinks and pictures that you can add to nodes to further categorize them. It allows you to save maps so you can go back later and edit them. It is very intuitive and simple to use. You can see what topics others are interested in and look for similar topics yourself. I really like the map feature.
My only issue would be having an easier way to export all my data. If there was some sort of cloud-based option where you could access your personal database through the web browser or something, then maybe this wouldn't bother me as much.