Forget the Tiny Tots Dolls or actionof Elmo this year, this Christmas eason is all about a little robotic hamster sold under the name Zhu Zhu Pets. The Zhu Zhu sell for about $10, but have accessories, like car and home are available separately. The scarcity of small robots store gave birth to an escalation on the Web, where they found $ 40. The experts can not understand how Zhu Zhu has been able...