Was talking to dh and we've both had the experience where we've been to an interview and all seems to be going well, we are shown around; 'here's your desk here's the tea room' and so on.
You leave thinking Wow that went well. Only to find a letter on the mat a few days later with 'sorry but you were not succesful'. 
I think it would be kinder not to show people around so much.