Hello: Esther here. I agree with the no ice-breakers and I have myself experienced the "fright-biting" of the facilitator. It's almost "the loneliness of the long distance facilitator"!!
Part of it, I'm convinced, is the time needed for people to just think over the question. If you look calm and confident that they will come forward, and you say something like, "Take your time and when the time is right, come forward" then they, too, won't get embarrassed or uncomfortable at the wait. Hang in and have faith that Spirit will work among you. Esther