Anthropology is currently an exciting field for open access (OA) publishing, so together with a group of colleagues at the University of Cambridge, we have developed the open-access Cambridge Encyclopedia of Anthropology. You can find it here: www.anthroencyclopedia.com
At the University of Edinburgh my team and I are incorporating Wikipedia into teaching during the first semester of the "MPH Investing in Global Health and Development" course. Our aim is to train students on how to edit this free encyclopedia and to make a certain amount of mandatory edits part of their course. Hopefully, this will provide them with first-hand insights into the changing nature of today's publishing landscape. We recently organised a first Wikipedia edit-a-thon and are now looking into how best to train our students. You can find a first plan of how this can be done here [PDF], here and here.