Context : OnWiki
Wikis, editable web-sites well-suited for collaborative writing, exhibit an oral culture through text. As such, they will facilitate an oral and tribal academy, as they combine both the print culture's text-based dialectic with oral tradition's memetic natural selection.
Certainly the "tribalism" sounds right (if by tribalism you mean small self-selecting networks of people with common interests who closely work and hang out together - though note ModernTribes caveat.) But the orality?