Wow, I'm quite surprised that so few of the people that have commented see the value in this. I just took a look at the site and I have to say it looks awesome and I can definitely see exactly what it was trying to address. It's not a blogging tool and it's not anything like Wikipedia. IMO it's simply a place to take notes, have them be available from anywhere else and I'm guessing to share them with others. As the name implies you simply jot something down. I love the fact that you can do that right on the home page, no annoying clicks. It reminds me of OneNote which I used to use on Windows or Google Notebook.