At parties, people would send Snapchats to friends who weren’t there. If you didn’t download Snapchat, you were missing out. Snapchat had a confusing interface, so users in high school and college frequently showed each other how to use new features and navigate the app. It’s a very visual app that’s often difficult to explain but easy to show to someone. People who knew the hidden features felt cool showing them to friends. Users delighted in discovering Easter eggs and features they didn’t know existed. This in-person sharing helped Snapchat grow quickly among young people.

