By 2020 , experts believe virtual worlds will be widespread . Online worlds could replace Facebook as most popular Internet phenomenon . That 's something we might not quite have nailed by 2020 , but there will definitely be some kind of engine that attempts it by then . '' Experts say young users could lead spartan lives offline , luxurious lives online . Comment:
By 2020 , experts believe virtual worlds will be widespread . Online worlds could replace Facebook as most popular Internet phenomenon . Experts say young users could lead spartan lives offline , luxurious lives online . Comment: