Tango To Be Windows Phone/Mango's First Videocalling Service, Leapfrogging Skypehttp://www.forbes.com/sites/elizabethwoyke/2011/10/25/tango-to-be-windows-phones-first-videocalling-service-leapfrogging-skype/ by icki • 15 years ago 1 0 15 years agoFOforbes.com