Well I've read around it a little and chatted a great with a friend whose been trying to implement it. One of my advisers thinks it's just a fancy term for coding! But from what I can see it's quite difficult to achieve true grounded theory. Apparently one of the techniques of grounded theory is to go back to your informants with what you've coded to see if they agree with your interpretation, which is interestingly similar to what the San are requesting in their code of ethics.