Well, well, well...
I want do to something more complex about trackers (i guess about trackers ?).
I'm on my way to look if a tracker can be usefull for a simple matchmaker (single dating).
So, how i see it...
All the registred user that wish it can fullfill a tracker containing public and private infos as their profile.
Public infos are displayed for anyone.
Private infos are invisible for anyone.
Private infos are subject to owner authorization to be displayed.
Another user that has his/her profile filled in the tracker send an "please..." email with a link to his/her own profile.
The owner can authorized or reject and then authorize this user to see the private infos.
What you say possible ???
PS : May be 1.9 community feature is the right thing ?