Sheet music and copyright discussion

David Pogue's online column at the NY Times has brought to my attention an interesting discussion that happened between Broadway composer Jason Robert Brown and a member of an online community that trades sheet music. (Trading in this context has the same meaning as "sharing" in the online recorded music community.)

The story goes like this: Brown decided to join an online sheet music community and send messages to people offering his sheet music to other members asking them to stop offering his songs. He reports that most of the people he contacted complied. One member, named Eleanor, engaged him in an interesting debate about his actions. Here's the post from his blog with a reproduction of the conversation.

This is a good discussion of the moral issues (objectively, I think that Eleanor is breaking the law) surrounding copyright infringement. Any thoughts?