Don’t miss the boat on the hottest social network of the yearAsk a room full of social media marketing experts what the next big social network will be, and they’re likely to say the same thing—Snapchat.  The 5-year-old photo-and-video messaging app, which boasts a valuation of around $16 billion, was the fastest-growing social network of 2015, according to a Piper Jaffray survey.  The platform is also one of the most versatile social networks ever created, offering marketers the ability to marry videos and photos with type and original artwork, then easily share content created in the app to other social sites.  “The coolest thing about Snapchat is that you can do almost anything with it,” says Mark Kaye, a Snapchat consultant based in Jacksonville, Fla. “You can take a picture of a piece of jewelry, draw a big heart around it, and add type to the bot