I was too busy live-posting here or scratching down notes to notice, but my wife was fascinated to watch the way #Slido was being used at #Netizen21. A lot of the audience were using it during the talks to share their thoughts about what the speakers were talking about, and upvoting each others' comments. This is similar to the way I imagined #Loomio being used at #OpenSourceOpenSociety back in 2015. Except that Loomio would make it easier to keep those conversations going after the event.