I met Neeru last fall as I was organizing a nonprofit site to let teachers share creative commons licensed lesson plans (a successor to my old wiki site, http://teacherslounge.editme.com). She gave me this same idea, and we’ve actually done it. A beta should be up within a week or two at TeachForward.org. If you visit the site now you can sign up for a discussion or announcement list. Email me at TeachForward at gmail dot com if you’d like to discuss.