Scriblink : A free digital whiteboard that users can share online in real-time. Pen and paper, minus the dead trees, plastic, and the inconvenience of being at the same place at the same time. Scriblink brings you the power of free hand expression with anyone, at anytime, anywhere in the world.


Features:
On the homepage you'll be immediately directed to a Scriblink board, which is free and requires no registration. Here you can take advantage of all sorts of useful features, such as:

• Privacy: the board is all yours, open only to the people you choose to invite
• Dynamic Tools: use shapes, hundreds of colors, a text feature, thickness bar, and a grid to help guide your drawings
• Image Uploader: upload an image onto the whiteboard as the background, allowing you to mark it, deface it, or highlight key elements
• In-Screen Chat: when working with others, no need to sign in to a third party software, simply use our in-screen chat
  

Limitations:
This site is a work in progress. Some features are intermittent. Others work well on IE but have issues with Firefox. The site admins are aware of these issues and working on them.

Site has a limit of 6 users sharing a whiteboard. A good site for impromptu or small collaboartive sessions.

Related Links:
Scriblink
Collaborate with an Instant Online Whiteboard at Scriblink