Thank You Thank You
Yahoo adds every buddy to the address book because they use the listing as thus
which is why when messenger is first run it can check your other address books for yahoo related ids.
As for the address book having a specific date, not sure about that not having the treo fone.
you could always chain him to the basement and not let him out lol
on another note, yes its up to you whether you want to trust him or not, but smoothering him with accusations will lead to problems sooner or later.