@SauteePan- I just wanted to say that my husband has been offered many jobs this way. I also wanted to add that trade associations can offer a level of legitimacy in a field.
Sometimes I will go to trade association websites in order to find accredited educational programs associated within the field.
In some cases like in the mystery shopping field, companies affiliated with a trade organization are considered good prospects for finding mystery shopping work. This is important because when many people hear about mystery shopping they think that it is a scam, but it is not.
It is a legitimate industry and those that are professionally affiliated are the best companies to work with.