Public Examples: (screenshots welcome)
- Public board: https://trello.com/b/yXU8TZDc/softwareleadweeklycom
- Public card: https://trello.com/c/KIBnI0vV/680-drinking-game-for-web-developers-1-think-of-a-noun-2-google-nounjs-3-if-a-library-with-that-name-exists-drink
Trello cards a have a "Share and more..." hyperlink which pops up a citation text input UI with a permashortlink auto-selected to "Link to this card", as well as a blockquote+script with permalink hyperlinked full plain text of card to copy and paste to "Embed this card".
<blockquote class="trello-card"><a href="https://trello.com/c/KIBnI0vV/680-drinking-game-for-web-developers-1-think-of-a-noun-2-google-nounjs-3-if-a-library-with-that-name-exists-drink">Drinking game for web developers: 1. Think of a noun 2. Google "<noun>.js" 3. If a library with that name exists - drink</a></blockquote><script src="https://p.trellocdn.com/embed.min.js"></script>
And markup embedded (with script tag removed)
Drinking game for web developers: 1. Think of a noun 2. Google "<noun>.js" 3. If a library with that name exists - drink