Legal Happiness

So, the question arises, because this is a book blog, is it legal to put the cover image of a book in the blog?
Not wanting to get sued by anyone, I felt this was particularly important. But my discoveries did not exactly go as planned.

Apparently it is an argument of the famous Copyright Fair Use clause. But what exactly is Fair Use? This is where it gets hairy. It's left up to the courts to actually figure out what is fair use or not, so by the time you get sued and find yourself in court, you discover that maybe in fact it is not legal. But really, why would this be illegal? Would it not help serve the author, publisher, and cover designer? It's free advertising, or when it comes to critique, free speech. Is it not?

For what I have found see:
http://blog.librarylaw.com/librarylaw/2008/08/book-jackets--.html

For uploaded book covers go here:
http://www.librarything.com/blog/2008/08/million-free-covers-from-librarything.php


So from here on out, I will be featuring an image with the books that I discuss with the knowledge that these covers are in fact copyrighted and are by no means my own. If anyone has any more thoughts on the matter feel free to chime in.