Web Playgrounds of the Very Young (Published 2007)Ashling Cannon, 7, of Washington, using Webkinz, where virtual stuffed animals come to life.Credit...Disney LOS ANGELES � Forget Second Life. The real virtual world gold rush centers on the grammar-school set. Trying to duplicate the success of blockbuster Web sites like Club Penguin and Webkinz, children’s entertainment companies are greatly accelerating efforts to build virtual worlds for childr
