I couldn't agree more. This whole discussion reminds me of when Steve Jobs proclaimed that folders would be irrelevant after Spotlight was introduced in Tiger, which of course was nonsense. The bottom line is that we need both - Hierarchy and Search. For the reason well-stated above that we cannot always remember the search terms. And if there really are no sub-notebooks planned, and tags really are going to be the only way to organize notes, then there should be a new UI for managing them, such as a HUD. Managing them in the sidebar is just awful, especially if you have as many as I do. I am going to try and reduce the number of tags I have as I have been creating them wily-nilly, but again, with sub-folders, it wouldn't be necessary to limit them. Lack of subfolders seems utterly bizarre to me, and I'm going to reconsider my Premium subscription as I'm not sure how much more data I want to put into a flat system.