For anyone who uses social media, or communicates with anyone under the age of 30, this article is gold dust. 

It's not so much that the rules of grammar and spelling are being re-invented, it's more that a younger demographic, using more ephemeral forms of communication are shaping language to their needs.

I especially like the important distinction between "yes" and "yes." I was bemused at first, but he explanation made perfect sense. Of course using a full stop is more assertive, impatient even. 

So if your business is marketing to teens and twenty-somethings, I suggest you read this straight away... or should that be: straight away..