> "Yes, and in his email he seems to believe that his dick pics app is "revolutionizing personal communication". Ok guy."

I don't know whether I believe it, but the argument for Snapchat is that it encourages user engagement. So if you're a photographer who wants attention, it's better to have someone's dedicated attention for a few seconds on Snapchat than it is for them to glance it while scrolling through their feed on Facebook.