Sneffel is a web based whiteboard that lets you create diagrams, share them with friends, embed them on your website, and collaborate on them with others. While this sounds typical of a real-time, virtual whiteboard, Sneffel has an interesting feature which might help it stand out.
DawsonITE is a blog devoted to Educational Technology. It's compiled by Rafael Scapin, Coordinator of Educational Technology at Dawson College in Montreal (Canada).