Picture messaging has been around for years, but Snapchat popularized the concept of a temporary message.
What’s so great about temporary picture messaging? Mostly the teen market. Today’s teens have grown up with cameras attached to their gadgets and a love of sharing.
Unfortunately, they often share things they shouldn't. Temporary picture messaging means that no one can save these images to use against them later.
Note: Sending compromising pictures is always bad idea. You can still take a screenshot of a Snapchat to save the picture. Be sure the teens in your life know about the dangers of this loophole.
Teens have been slipping away from Facebook, so the company is trying to keep them. When Facebook failed to buy Snapchat for $3 billion, it developed the new Slingshot app instead.