Poptropica is a fun virtual world for kids that can be easily navigated. Inside Poptropica you can play games, solve puzzles, go on quests, and visit different places in the world. I could totally see my children getting hooked on this. I have only tinkered it with it briefly, and saw some learning games, but it still seems a little low on the learning side. However, it might be effective at teaching problem solving skills. If anyone has experience with this program, let me know what your review of it is!