I think that when someone is very good in their field, whether it's boats, cars, mortgages or accounting software, they care (sometimes very passionately) about it. When they are asked for advice, they spend time and effort and actually care about the advice they give. For example, when asked about a particular boat, Jim could have just said, don't buy it. Instead, he most likely spent some time to try to give detailed reasons and examples to help educate the person asking and give them an understanding of why they were getting the advice they were getting. Speaking for myself, whether I am paid for my advice or not, it makes me feel dumb for caring so much when it's ignored. And almost makes me not want to care so much next time. Almost.