It's like Gmail drafts. While it's delivered to you as an email stashing feature, I realized that it's the best cloud-based (offline-synced, omnipresent) note application. It can do that even if "note" is not in its name. We can be creative about using the tools at our disposal.
Besides (back to the original problem), it can be handy sometimes that you have a tool that can operate over the whole range of managed files, even if they are logically unrelated.