Well, we definitely don't reside in the same address so I guess QF don't check the addresses because I receive mail at my place, and she at hers.
Lindsay, I joined as a life member by chance in 1988. I was a life member of the Ansett Golden Wings and had just arrived at Sydney on an Ansett flight which, at that time, I thought offered a much better product than QF. I had about an hour to kill to be picked up and went to the QC simply to pick up a brochure from the front desk receptionist. After being handed the brochure and walking away she noticed my Golden Wings luggage tag and asked what status was I at the Golden Wings. When I told her she asked for me to wait and contacted her supervisor. The Supv came to the front desk, and after I told him that I was simply inquiring about membership to the QC he asked to see my Golden Wings Card, which I showed him. He explained that if I was a life member of the Golden Wings Club, that Qantas wanted my business and he crossed out the amount on the QC brochure (can't remember what it was now) wrote down $750 and signed it. It was some sort of membership drive at the time. Cut a long story short, paid the next day and in September 2001 when I was in USA using a F class ticket on 200,000 Ansett points with United, Ansett went bust. At least I am in a much better position to have used them as I know of many who lost heaps.