[Login Required] Apps are passe. Yo brings content to you without needing an app.

* smaller * Larger Few apps in history have been as controversial and polarizing as Yo. Many people have called it the world's dumbest app. It has been satirized on "The Colbert Report," Stephen Colbert's Comedy Central show. The first time it was submitted to the app store, Apple rejected it on the grounds that it lacked substance. Yo's own creators were uneasy enough about being associated with Yo that when they launched it, they didn't put the... Available to WSJ.com Subscribers * Demo...