These people got my name a couple of years ago. I still receive emails from them.
Multi-level marketing has been responsible for many people making huge amounts of money. However, it's a game of selling--not necessarily the product, but the concept to more investors. If you work hard enough at it, it can be done.
I think there are better ways to get rich, though.
I did quite well with Excel Communications a few years ago, but I did not like the hard work of constantly holding meetings, training, motivating, etc. Not my cup of tea, but it could be yours.
There are opportunities in ML marketing that do NOT require a big investment of money, just your time and energy.
DonM