This is a really cool feature. Being able to play a video and continue browsing Newsblur (without putting video in a new tab) is nice, and being able to queue things is great. If you want to actually watch the video (youtube specifically) that’s a bit tricky though, you have to find a part of the video that doesn’t trigger something unwanted to focus it so you can fullscreen with F. In other word, it would be good to have a way to expand the player.