In 2012, Venetia Laura Delano Robertson of the University of Sydney, Department of Studies in Religion wrote a paper for Pomegranate: The International Journal of Pagan Studies entitled "The Law of the Jungle: Self and Community in the Online Therianthropy Movement". I've seen brief mentions of this article in a few places, but I've only recently gotten hold of a copy myself. For those interested, a copy is now available here. The work explores the idea that there are implicit initiations and rites of passage, and a hierarchy inherent to the therian community. And it does make a good case for that. Much of its content could also be extrapolated to the otherkin and vampire communities, in my opinion.
This is one of several recent academic works on the subject of otherkin which I have learned of, which brings me to one final thing: does anyone have access to ProQuest articles through their university library or another organization of which they are part? There's one academic work in particular I'm looking to get, but as I'm not a member of any subscribing organization it would run me $38 for the pdf and I'd rather avoid that if possible.