YouTube cards might finally get you to click video links

Lots of YouTube videos carry annotations with links to related clips or other websites, but how many of them do you actually visit? Probably few of them, if any. However, YouTube may have a way to pique your interest. It’s rolling out cards that both look much nicer — compared to text boxes, anyway — and are available at any time, not just at specific moments. – Jon Fingas, Engadget