LeapFrog (LF.DL), maker of the children's tablet LeapPad and other popular educational electronics for kids, now makes eight of the top 10 best sellers on Amazon's Kids' Electronic Learning and Educational Systems, 20 of the top 20 for Kids' Software and Books, and seven of the top 10 for Kids' Electronic Accessories. Now, the company is releasing two new products, its LeapPad Ultra tablet, and its new LeapReader, which helps kids learn to read and write. In this video, Fool consumer goods analyst Blake Bos discusses why these products are already a hit, and why he likes how sticky of a user experience they create as part of LeapFrog's razor-and-blade model. Finally, Blake tells investors what to watch for, to know whether this meteoric success story is staying on track.