Seems that PBwiki is giving away premium accounts to librarians and educators. Sign up now at the PBwiki Back to School Challenge
Announcing a new way to make PBwiki a part of your classroom this year with:
* A FREE Premium PBwiki ($250 value)
* Tools to help spread the word
* Support for using 21st century collaboration tools in your classroom!
Itâ€™s free to join. Sign up to hear about the launch before anyone else.