Although some network marketing companies have earned a bad rap with the public, many companies, like Mary Kay, Avon, Tupperware, and more, have provided wonderful opportunities for people to earn a great income doing something that they love and learning valuable business and marketing skills along the way. But this type of business opportunity isn’t for everyone, and there are (inevitably) people who start network marketing for the wrong reasons and end up not doing very well at it. From time to time a few of those who feel that it was the company’s fault that their…