Really awesome idea, I can see this coming in incredibly handy during talks / presentations. Quick piece of feedback on the site, though. At a glance, it's a little tough to see right away what AskMore's main strength is - it's not until the 6th bullet in "How it Works" that I see "Ask the questions your audience wants to hear" and get that the main use is real-time question-asking for presenters. Maybe add a tagline like "real-time questions for presenters" (except worded better) on the homepage?