An article with interviews on a woman who found her entire novel plagarized with name changes on a fanfic site. Quite fascinating on many levels, a good warning, and a reminder of how good fans can warn you to such things.
This happens more than people realize, and it's not just for no money – there have been issues of "ebook spam" where people sell copies of books cheap until they get caught.
For my money there's not enough focus on plagarism as of late in media. I'm not sure why.