The New York Times has a nice, lengthy article dealing with something that's important for bloggers and web writers everywhere: when is the "fair use" doctrine protection against a challenge that you've violated someone's rights by using excerpts from their column/magazine/newspaper/book/etc.?
Apparently, that standard 4-part test we've all relied upon for years now to determine "fair use" is being challenged by those who are upset about some things.
And by some things, of course, I mean advertising dollars.
This is a big deal and getting bigger, and you need to read this article.