"Keep the rabbit hole of the internet open by honoring discovery."
I've been curating for almost a year and only just discovered the Curator's Code. I may have to plead the Barbarossa defence: "the code is more what you'd call "guidelines" than actual rules" (Pirates of the Caribbean).
This site is beautifully put together, highly persuasive, and full of good sense. There's a bookmarklet for your toolbar to help you attribute creation and/or discovery.