When the is a news segment or magazine article about how to find a good reputable contractor we are always told to ask for references and to actually call them to see if they are happy with the service they received. I always wonder who these references are and why would they be willing to talk to total strangers who call asking if they are happy with work they had done. I would feel strange calling and asking them. Do they get a lot of calls from potential customers? Why would they be willing to do this? I just don't get it, can some one shed some light on this for me?