Default OneNote / Live - Awesome feature, barely documented?

I've been using WP7 for about 5-6 days now. It's been an interesting combination of "How can that be missing?" and "Holy crap, that's cool!". By far, I think the most awesome and unique features are the cloud-related ones, like auto upload photos to SkyDrive and Zune.

And then I discovered the uber-coolness of OneNote.

As with many things on WP7, the documentation is scarce, burried, or both. But, did you know that you can have tabbed OneNote Notebook on WP7? Did you know that it can be perfectly synced to the free Web version and to the Office 2010 version of your PC?

Did you know that you can even have multiple notebooks?

If not, here's how:

1. Go to office.live.com on your PC, and make sure that you have a OneNote file created. If you've used OneNote from your PC, there should be a Personal (Web) file. If not, create it.

2. If you have OneNote on your PC, you can open it from office.live.com; just hover over the file, and click Open in OneNote. OneNote will save a book tab on the left side (in rotated print).

3. On your phone, set OneNote sync on (from Settings / Applications / Office / OneNote). Make sure to set Internet to default to mobile version (important!) and navigate to office.live.com in the Browser.

4. Go to the folder you have the OneNote Notebook, and tap it to open it. This automatically adds the Notebook to your OneNote on the phone, and opens it in OneNote. The tabs will all sync.

Presto -- you now have a Cloud based OneNote Notebook synced to your phone! You can see all your tabs, and all your pages; if you make changes, it all gets synced on the cloud automatically, and you can see it all on your Office 2010 version of OneNote, too!

You can even color your tabs. Just set the colors on your PC or Web, and they'll sync on the phone.

Want a second or third notebook? Just create a new one on Office Live, then go there on the phone and add it.

Also: if you tap and hold a notebook section (tab) you have the ability to set that as the default for new pages.

Neat, huh?