Posting the syllabi of the classes you take

On a board I frequent, a poster raised the question: Is sharing syllabi with other students ethical since the syllabus is the intellectual property of the professor?

The situation that led to the post is that students of one of the universities offering an online PhD program (NCU) has a Yahoo group in which students do share syllabi.

What do you think? It caused me to do some digging. I don't openly post complete syllabi, but I have used parts of them in my portfolio to help explain my work.