From the site: TodaysMeet helps you embrace the backchannel and connect with your audience in realtime. Encourage the room to use the live stream to make comments, ask questions, and use that feedback to tailor your presentation, sharpen your points, and address audience needs.
If you're going to take your audience or class on a journey of several websites, this is great for that. Just type in (or copy-paste) the links, and they only have to click the links. Jim, over at ITD, uses it all of the time.
Write it on your communicator: TodaysMeet.