More on the xAPI stuff… and perhaps a wee bit of clarification about terminology.
OpenLabyrinth was just admitted to the official group of Tin Can Adopters:
Tin Can API was the original name given by Rustici Software. It is now more properly known as the Experience API or xAPI but many still call it Tin Can. It is the same thing and the terms are synonymous. Advanced Distributed Learning (ADL) was the group who first commissioned the development of xAPI by Rustici so I guess they get to name it.
But most importantly, the API will remain open and non-proprietary.