I thought the community might be interested in Tikatok.com. It is an online community created by graduates of the MIT Media Lab and Comparative Media Studies programs (that's me) to give children the opportunity to make and share their own storybooks, and publish them using print on demand. We recently prepared a suite of teacher tools that make it easier for educators to sign up a classroom and manage student work.
I would love to hear any impressions you have. It is still a bit rough around the edges, I will admit (it's on our programmer's to-do list to fix some typos, for one). But we're committed to making this a valuable tool for teachers.
Thank you so much,