A new find: Interaction-Design.org

Came across a great find today when doing research.Interaction-Design.org - calls itself

...a free, open-content, peer-reviewed Encyclopedia covering terms from the disciplines of Interaction Design, Human-Computer Interaction (HCI), Design, Human Factors, Usability, Information Architecture, and related fields.

It's like a really focused wiki and has a great author index that I'm sure I'll return to a lot.