It's not much good for me - as a chemeng student my notes are far too full of equations and diagrams for a computer program to be beneficial for taking notes. Also, there's nowhere near enough room in our lecture theatres for a host of laptops.
OneNote isn't a big enough application to have earned the Ribbon, sadly. I really like the Ribbon, and I wish Outlook had it in more than just the email composition window.
I'm sure it can be useful and fun, but for me ... I don't use it.
If you believe everything you read, better not read.