I was a journalist, but I was starving. And I've written fiction, but I couldn't get a publisher. So, I was basically a very frustrated creative person working in advertising, and even there, I have a great idea that client won't buy it.
Even if it's not always the best markup, what are Facebook and Twitter? They're web standards with some scripts. They may not validate, but they're still CSS layouts and simple markup, and that's great!