I asked someone for Trusted List access which they granted. However, they also gave me access to all their ancestors and descendants - very nice of them - however the requested person turned out to not be a match (I wish the "potential matches" either looked at location or allowed us to see it).
I was then left with the problem of removing myself from all the people I had just been added to. I did it by selectin "all ancestors" and "all descendants" and hoped that was all I got added to :-)
Could I suggest the ability to sort the Trusted List by profile manager?
That way I could have quickly seleted all that "Mr A" had added me to