I thought this was a superb demonstration of both marketing via social media as well as it's intended purpose, online security.
A teacher uploaded an image to demonstrate to her class how far and wide images can travel. Look at the number of shares since 4th October and a few of the comments!
Here is the original post on Facebook if you want to leave your own comment 
A fantastic visual safety aid for kids as well as a lesson in how to produce viral content!
