So, I almost went to a Primerica "interview." I was in college, looking at jobs/internships. Start talking to this guy about life insurance sales...he says let's set up an interview...
Googled Primerica and I wasn't even sure if it was a real company anymore. Everything seemed fishy and not-transparent. Canceled the "interview" and never looked back.
Since then, I've made myself aware of all the popular MLM companies. If anyone mentions one or starts to pitch me to one, I can easily interrupt them and say, "sorry, that's a pyramid scheme and I already have gainful employment" or "sorry, that's a pyramid scheme and I'd rather go to a regular store to buy what you're selling." Some folks drop it right there, some fight me on it, but believe it or not, most folks concede that they make little to no money doing what they're doing, but they make enough to enjoy the products for free or cheap. Free/cheap stuff isn't worth trying to constantly sell stuff to family and friends.