I have been using google forms for about two year now for my conference sign up and absolutely love it! With Google Forms you pick the picture and style for your sign up. You also can customize the times and any questions you want parents to answer when signing up. I always ask if there is something in particular they want to discuss so that I am prepared when we sit down for our conference. I am not a fan of surprises. I think what I love most about using Google Forms for conference sign up is that I can reuse the same sign up each time we have conferences. A HUGE time saver!!