Douglas Rushkoff : Web giant Yahoo bought Tumblr for $ 1 billion to attract young people . He says kids use mobile Web far more than desktop that requires heavier engagement . Maybe that 'll work , but it looks to me like Tumblr has gone from being cool to trying to sound cool . Comment: Rushkoff : Kids ' tweets about end of an era show challenge of being bought by Yahoo .
Douglas Rushkoff : Web giant Yahoo bought Tumblr for $ 1 billion to attract young people . He says kids use mobile Web far more than desktop that requires heavier engagement . Comment: Rushkoff : Kids ' tweets about end of an era show challenge of being bought by Yahoo .