To contrast with some other snarky responses, for me Snapchat has very little to do with "social validation". Personally snapchat is another tool for me to connect with people. I get to see what people are up to on their shared stories, we exchange cool/funny things we see, and my musical friends and I exchange short videos of what we're working on. It's a little more humanizing than pure text chat. I only text/chat with a few people on a regular basis, but there's about 10 people I exchange snapchats with pretty frequently. It's a nice way to keep in touch, and it's a platform I tend to share on more than Facebook. The content is only there for 24 hours, and is only seen by the ~50 people I added rather than the 800 on Facebook.