Should writers allow their work to be published for "exposure" instead of money?

Well, it depends. Does your local supermarket accept exposure as currency? Can you pay your phone bill with it? If so, go for it. If not, then to hell with working for free!

Publishers have no end of arguments about why you should do it, but the primary reason is the obvious one: because if we're willing to give our stuff away, they don't have to pay for content.

I'm okay with writers working for not much money.
Writing's rarely a lucrative career choice, and you can build up the amounts you earn per piece over time. But work for free? I don't think so.

My arguments are in this blog post. But I'm posting this is a section for "non-paying markets," so clearly some people will disagree. Have you ever given your writing away? And if so, what benefit did you get from it?