Re: It can never succeed beyond the novelty stage
It seems odd to spend a lot of money and effort to move a videoconferencing screen around a venue when every stand will have a PC that you could already skype to. The robot doesn't provide anything more than mobility since it doesn't offer gestures or contact. It might provide some presence - to get you noticed - but apparently not enough to move other attendees out of the way.
So it seems interesting in a novelty way, but doesn't really bring any practical improvements. Did you find any advantages over a non-mobile screen, or is it just that at an event like this, the presenters are geared up for a human-shaped visitor ?