O RLY, The Guardian's Steven Poole? We're going to have to disagree with you on this one.
New Gawker.com editor Max Read issued a diktat instructing his staff not to use internet slang. Now, while many (including Corpowrite Asia) can find delicious irony in the fact that one of webdom's preeminent hipster realms is taking a stand against hipsterisms, we also understand where it's coming from. Read says he wants Gawker to sound like it was written by adults. Part of that is recognizing how using fast-dating terms like "epic", "pwn" and "amirite" can make one sound something worse than uncool. What's worse than uncool? Try-too-hard.
Slang is a short-lived thing. For example, we have it on no higher authority than a friend's 13-year-old daughter that nobody says "lolz" anymore. That means it's a matter of time before nobody is typing it, either.
This is where companies and bureaucratic/ government organizations get themselves in trouble. On the continuum of coolness, they occupy a slot that can be charitably described as deep in the opposite half of where a typical 13-year-old fits. The moment corporates try to appropriate stuff "the cool kids are doing" for their own marketing is probably two years after that target demographic has already moved on from it.
Poole is mostly talking about individuals and the way we converse with each other in the modern age. It's when he takes issue with a company (Gawker) wanting to control its own voice and keep from being co-opted by hipsters that strikes us as a bit "derpy", to use his term. There's a certain class and authenticity to expressing ourselves like the adults we are. It's also truer to most companies' personality and DNA. We should all give it a try sometime.