The ease of use and the fact that you can save pictures of your kids work easily. It doesn't take too long to get used to using it. I also love that it can be set up with multiple users so that everyone in the class knows exactly what their child has been working on. Sometimes when I enter my information into the system I don't always see what I have entered straight away - but this may be due to my own fault! We are using it for all our classes (3-5yr olds) at a local primary school. It means we no longer need to write everything down and keep track of who has done what as the system remembers who did what. This means we can spend more time doing other things like talking and playing games etc.