Tim Kreider writes for the NY Times (emphasis mine):
So I’m writing this not only in the hope that everyone will cross me off the list of writers to hit up for free content but, more important, to make a plea to my younger colleagues. As an older, more accomplished, equally unsuccessful artist, I beseech you,
don’t give it away.
As a matter of principle. Do it for your colleagues, your fellow artists, because if we all consistently say no they might, eventually, take the hint. It shouldn’t be professionally or socially acceptable — it isn’t right — for people to tell us, over and over, that our vocation is worthless.