I don't think HFG has taken off very well compared to his first two organizations he helped build, A.L. Wiliams and World Marketing Alliance, now known as World Financial Group.(WFG)
If you want to join a MLM, I hear People Helping People (PHP) is the latest craze!
The source is the last place to look, unless they are publicly listed and you can view their SEC filed annual reports. It takes a minimal amount of math skills to determine that any company claiming to add 35,000 reps to its force of 100,000 each year, while maintaining its force size at 100,000, has a 30+% churn rate.