Although not directly related to iPad, the OneNote program from MicroSoft has been released “free for a limited time.” You can grab your copy here.
The description states that the program is “the easy-to-use, powerful note-taking application for all of your ideas.” You can sync your notes with free Windows Live online storage and access them via your phone, PC or almost any browser.
This program has been very popular with Windows users and it is interesting that MicroSoft is finally porting it to Apple’s iOS. It is not known if an iPad version will be released.
iPad Notebook 