If a large number of people were using a given note system (eg bullet notes), there might be a good business idea there:

- You mail us your full notebook

- We digitize it

- It's available in a searchable web interface that understands the semantics of your note-taking system.

- We recycle the paper.

Mailing means a dark period when when you no longer have your notes with you but still can't see them online. IMHO that would have been acceptable when you needed a scanner but is hard to justify now compared to the immediacy of taking photos with a phone.

Still, there may be a place for mailing old notes in bulk, ones you barely touch but can't make yourself just throw out.

I believe EverNote has some sort of a 'smart notebook' which is a digitally backed up Moleskine.

"Evernote Smart Notebook by Moleskine: Fill this book with ideas and sketches, then let the Evernote mobile app bring them to your computer, phone and tablet with a simple snapshot."

http://evernote.com/moleskine/

If you're throwing the notes away, why not erasable board (http://www.theinfinitybinder.com) or digitizing tablets/pens?

I've used the EchoPen, and really love it. It records synced audio along with your written notes, and digitizes both of them. You can back them up on your computer or with Evernote etc.