The inability to share stacks is compounded by the fact that we cannot tag items within a note. Here's the example (in a school setting, but you get the idea). We want to use Evernote for a digital portfolio. There are 10 aspects of student achievement that we wish to highlight. We want the student to be able to share that portoflio with their teachers and parents. Each item (document, picture, etc.) may apply to more than one aspect on occasion. SO: If we could have a single notebook "portfolio" with 10 notes "1 for each aspect" and then tag each item within each note (to allow each item to be searched using those descriptor tags), we would be good. A single notebook could then be shared, but a tag only applies to an entire note. SO, this won't work. OR, if we could have a stack entitled portfolio, with 10 notebooks, 1 for each aspect. Then each item could have its own note, within the appropriate notebook, and tagged as needed. However, for this system, not a single item, but 10 would need be individually shared with each teacher, parent. So, each teacher who has multiple students sharing items with him/her has not a single item shared but 10. This gets to be a problem pretty quickly. So, Evernote needs to either impliment the ability to tag anything WITHIN a note, and not just the note itself, or it needs to impliment the ability to share an entire stack as a single entity.