Individual cards now have their own page.
Whereas previously you could only refer to a specific card with a fragment identifier (which would highlight the card in the context of the entire stream), you can now also link directly to a card shown in isolation.
One benefit of this new feature is it makes sharing individual thoughts on Twitter, Facebook, etc work a little better.
We also have some new features in the works that will rely on cards having their own page.
The fragment identifiers will still work and updates on the home page still link to cards in this way to give you the context.
But now, if you hover over a card and click on the date-time at the bottom right, it will take you to the page just for that card.