Thanks, AshC.
Yes, but it is not really just "by default" that questions are private...there is no way to change this setting. That's what I was suggesting should change.
For some of my webinars, I receive a lot of feedback saying "I wish we could have seen the questions other people were asking" and, sometimes, I would like to at least have the option to switch that on. It does exist as an option, I believe, in GoToTraining, so it must be possible, technically.
I hadn't thought of the polling on the fly option to achieve the 'upvoting' - although that would rely on having one or two people helping me deliver the webinar, as this isn't something I could do while presenting. Also, I am not sure it quite as neat as upvoting. It feels a little bit like I am exposing the people who asked the losing questions by doing it in a poll.
Other systems - like WebinarJam and BigMarker - just this open chat and upvoting stuff pinned down. I chose GoToWebinar because, in other respects, the product wins through. But it was a much closer call than it should have been, given that GoToWebinar doesn't have these increasingly standard options.
L.