Using Scribblar, users can collaborate on their own online whiteboard or "room" - featuring many of the tools familiar to users of Smart or Promethean boards - lines, text, shapes etc. You can upload your own images where you and others can edit it or comment on it.
In addition to the whiteboard - there is a chat box to communicate with other users, and there is also a voice chat option as well.
Microsoft Office Labs offers an Office 2003/2007 add-in called Community Clips, http://officelabs.com/Pages/ConceptTests.aspx. Use Community Clips to record application tutorials in which you want the viewer to see what you are doing on your desktop. The file is saved as a standard Windows Media Video (*.wmv).
I have been creating a lot of student projects that use ThingLink as a tool for learning. I have also received a handful of of questions from teachers who are highly interested in facilitating a similiar project of their own, but need help with the management involved.
"With so much active student engagement, how do you manage a project like this?"