Thanks! Every story has tags, if you scroll down. You can also search by tag, and you can open up the Topics section from the menu at the top of each page. All of that being said, we are working on redesigning and simplifying the interface, and content discovery is a key part of some changes we'll be rolling out soon. We do not have any plans to add video. We find something very striking about a beautiful photo, or a photo and audio. For now, we're sticking with this, but may revisit video down the road.