I decided to give SnapChat a go (bluekitsunebi is my handle).
I didn't really get why such a thing existed and I had no interest in using it, which was precisely why I felt I had to get an account. I did it for science. Also to answer the question: "Why else could this possibly exist except to drunk-send naked selfies?"
Funny thing, though: using SnapChat made me nostalgic for my AIM away messages. For when Facebook was only for college kids. For having a LiveJournal and a Geocities web page that I was sure no one could ever a.) trace back to me if they didn't already know me or b.) find without invitation.
Basically nostalgia for being a naive, 19-year-old hormone-bomb who impulsively shared anything and everything without fear of the consequences!
All of that stuff did not disappear. I had to find it and delete it and I'm only half certain it's actually gone. Some day I expect some of this old content to manifest, a ghost of my angsty youth, and destroy my already barely professional online persona.
Maybe that's what they're symbolizing with the cutely evil, gleefully mocking little dude in the SnapChat logo: