Here the cards are the content. So with your Evernote example, that's displaying some of your other content in the form of cards, but also this is a public syst

Here the cards are the content. So with your Evernote example, that's displaying some of your other content in the form of cards, but also this is a public system to showcase rather than a personal or private group solution. I think the web site is probably more confusing than the app, especially if you're logged in the app and can view how to create cards.