OneNote 2010 is an amazing note taking application included in Office 2010 and it has the ability to share notebooks over the network. If you have shared OneNote notebooks, you can track any changes to it using On(e) Note Notify. It is a simple freeware tool developed to monitor Microsoft OneNote shared notebooks changes.
Since One Note does not store a history of changes, only the latest changes can be retrieved from one note, so you might miss some changes in frequently modified notebooks, i.e. One Note might overwrite the information on who and when has modified certain parts of the notebook and you’ll never get a notification.
You can refresh it to see the frequent updates to the notebook.