The talk by Dr Tahu Kukutai is really good. Be sure to read about the Treaty of Waitangi first.
This Video will help to convey to outsiders what the Maori people understand to be giving up exactly when going online, what it is they care to preserve in this transaction (mana), how and why they want to reclaim it (taonga), and how much importance they place in using their own words in formulating this agenda (and why).