This article profiles some top Open Educational Resources including the Khan Academy-sponsored SmARThistory.org, a group-study platform, free or low-cost digital textbooks, and other cool ideas.

http://mindshift.kqed.org/2011/10/open-education-sites-offer-free-content-for-all/

For those of you interested on the convergence of education and technology, check out http://www.convergemag.com/. It's part of the Center for Digital Education that focuses on the news, perspectives, and analysis of the education technology market. Up-to-date & in-depth articles.