Dabbleboard, RIP -- the end of a cool service

Dabbleboard, a cool, shared-whiteboard, vector drawing service is shutting down.

I didn't use Dabbleboard for production work, but it was a terrific tool for teaching students the difference between vector and bit-mapped images and illustrating synchronous collaboration.

This illustrates one of the risks of cloud computing -- you are stuck if you depend upon a service that goes out of business, raises its prices, etc.

I wonder if the folks at Dabbleboard would consider open sourcing it?