I was just sent a link to this article on the NPR ombudsman blog. It's not related to ebooks except in some kind of meta way, but I thought it was worth a mention.
The article discusses attribution, and it uses the example of one NPR show that made a mistake in how they credited one of their sources.It's not that the show plagiarized the content so much as the attribution wasn't clear. Here's an excerpt:
A recent example involved a story on Morning Edition, entitled “In Horror Flicks, the Cell Phone Always Dies First.”
To some, the piece appeared to have plagiarized Rich Juzwiak’s September 2009 YouTube video montage of horror flicks where cell phones are rendered useless just when they are needed most. "No Signal" has more than 314,000 views.
Any one who writes for the web should read this, and then think about how you'd handle this situation.