A great idea for collaboration and presentations/teaching .. Not had a chance to try this yet. Twiddla - Team WhiteBoarding. Sneffel - Changing online education. RealtimeBoard - Online whiteboard. AWW Whiteboard. Mural.ly - Visual Collaboration. Scribblar - Online Whiteboard and Collaboration. GroupBoard - Collaborative Online Whiteboard Software.
Stormboard - Online Brainstorming and Planning. Add a sticky note and post it online with dot voting.