I reckon with all the knowledge you have and the amount of members that are now registered you could make this the one stop shop for people emigrating to NZ..

Have a link to the official nzis site to the bit where you can download the forms..
Have a self assesment type application that will work out your points..

basically do everything that these agencies charge an arm and a leg to do but everyone muck in and helps everyone else along..

I reckon it could just be another forum and each person has there own "account" if you like and when they come up against a brick wall the collective will help them out.. also if they come across a solution/work around to a particular situation then they can post there info here...

I think a lot of this is basically what you do anyway..?

another thing might be scheduling a chat ..
Every time i visit the sie I have a look to see whos chatting.. and no one ever is..

there you go pick the bones out of that...