High Definition

Do We Want an Erasable Internet?

Dec. 22, 2013 4:46 p.m. ET


It sounds silly because Snapchat is just an app. What's more, it's an app used primarily by teens and college students, and wasn't I telling you just a few weeks ago that young people aren't good predictors of tech success?

Then there's the question of whether Snapchat is useful at all. Snapchat sends so-called ephemeral messages,...

Available to WSJ.com Subscribers