The kiddies, anecdotally, are migrating to the newest form of virtual world crack, WebKinz. No doubt this, too, will be a fleeting obsession. Eventually kids leave PlaySkool behind for more serious toys, like MTV's Virtual Laguna Beach. The larger problem is that no one is developing kid-friendly worlds that contain anything to promote long-term interest. Until they do, they'll flash in and out of vogue faster than playground taunts.