Add me to the list of users who want to share stacks! Stacks are great for providing structure and context for all of our documents and media. PLEASE let us share this with other users. This sharing feature is really needed, and would more fully address another request I've seen on the forums -- nested notebooks. Stacks already function as a organizer for notebooks. But we can't share this organization with other users if we can't share the stacks. Stack sharing, PLEASE!