My sister is barely learning to use the mouse, let alone click. This is a great site with simple games that are suprisingly interesting. The best thing I like about it is that there are no instructions, yet you can still understand what to do. The simplicity and colorfulness is absolutely amazing.
I love that this site has so many areas to explore, that they keep them changing and that children who are pre-reading can enjoy doing activities that are entertaining, sometimes educational and engaging. There are no commercial tie-ins.