While i'm generally in the same boat with you, i do have a couple of 30+ friends who use Snapchat. That's a couple more than Twitter. I personally don't know a single person who uses Twitter, regardless of whether they're in tech or not, which paints a slightly different perspective on the whole Snapchat phenomena for me. I also want to point out that the possibilities of what Snapchat can become scares the shit out of me. They have the largest database of people's faces and they can do a lot of things with it.