When I was DHing I had an agent ask if I could take the jumpseat since they were over sold. I said only if no legitamate jump seaters showed up and sure enough one did. I guess its common sense and common courtesy. Most of the people I've worked with at least get that. I don't think the industry is that bad. I think many of the people who are always whining are looking for ways to be unhappy. I feel bad for them because they can't enjoy their work, they same work that those of us who are happy do.