CNN: You may not have heard of Snapchat. But if there are teenagers or 20-somethings in your life, it's a safe bet that they have. Snapchat is a mobile app which lets users share images or videos that disappear after a few seconds.
In a little over a year since it was released by a Stanford student and his recently graduated business partner, Snapchat has has quietly amassed millions of users and now claims to process more than 30 million messages a day. Some bloggers have called it the "next Instagram."
Not bad for a mobile tool which, rightly or wrongly, is often cited for one very specific ability -- the "sexting" of naughty images to other users. In an age when young people are constantly being warned not to post inappropriate things online, Snapchat offers a degree of freedom by letting users share unfiltered thoughts or images without much fear of reprisal.