Writing Software

I only have a minute to post before dinner, but I was doing a Google search for writing software and came across Page Four. It seems pretty awesome! Take a look at this screen shot:

You can make notes for each chapter, create easy to access character files, work on multiple novels at a time...the list goes on. Check out the website to see more. Best of all, it's free to download, but of course if you want total access you have to pay $39.95, which is not bad, if you think about it. Microsoft Word costs a lot more than that, and let's be honest, while it has some nifty features, it's not created for writers the way this software is.

So, have any of you used this software, or any other kind of writing software? Any thoughts?