I feel that one is not protected enough in terms of personal details.
It could follow a barrage of advertisers contacting you for various reasons.
I feel that gransnet should make more effort to protect members that wish to become part of the Insight Panel, if they did, that then I would probably be more inclined to sign up however, as things are at the moment, I believe that one would be open to nasty possibilities.
To think that London, or anywhere else for that matter, does not belong to any one demographic