Snapchat was the first social network I was too old to understand. I joined Facebook as it first rolled out on campuses when I was in my junior year of college. I joined Twitter and Instagram in the very early days and even snagged my first name @gregory as my username on both. I scoffed at people who didn't "get" these services. Then Snapchat came around. I downloaded it, but none of my friends were on it so I found it impossible to understand the appeal.