Ah, I should have stated "trust them fully IN OUR PRESENCE." In other words, she doesn't have to hide behind our legs from them, she is allowed to talk to them, sit on their laps, accept candy etc... WHILE WE ARE THERE. To clarify more, I'm talking about these people are strangers to DD but not to us (friends, co-workers and the such), not random people off the street. I agree that even these people may harbor secret depths of evil, but I'm not going to keep DD locked in her room for her own safety. It's a balancing act.
In light of your and Susan's statement I have to ask. Do you not use babysitters or allow your children to attend school? If you don't trust anyone how do your children learn to deal with others? Or was it just my use of the word "fully" that triggered your responses?
-Blast