So how can libraries use it? Before we get onto specific themes, the most essential thing is to think mobile. The whole point of this feature is people watch short videos, where they are, within the app. Twitter offered promoted videos to paying sponsors before this was rolled out to all of us, and apparently 90% of them were watched on mobile devices. So, hit the ground running (1 second intro, max!); shoot from the chest up if you've got people in there so they can clearly be seen on a small screen; if you're speaking make sure you're close to your phone so it's not too quiet; if you use words make the font LARGE; and if possible make the video in such a way as to not need sound to make sense.