What is meant by direct sales, you might ask [waiting patiently for a question....]? Thanks for asking, companies in this category are Mary Kay, Avon, Fuller Brush, Tupperware, Pampered Chef, Amway, and others.
So if you are thinking of making a foray into this market, make sure you do your research and soul searching to make sure you what it takes to make it work. I speak from direct experience, in High School and early College, I was an Amway distributor, and while had some great tax breaks and some meager income, I was never on track to be a Diamond in the rough.
Beware of things that sound too good to be true, because they usually are not true :o)