These systems are called the Forced Matrix systems and more commonly known in Taiwan as the Japanese style of marketing plans. A forced matrix, as the name suggests, is a marketing plan where all distributors are limited by the number of distributors they can sign up as their first generation. That is to say, if you join a binary company, you can only sponsor 2 legs.
I am from the old school where MLM is concerned and will only accept MLM companies where distributors will make overriding bonuses or leadership bonuses with only one line or can sponsor as many legs as they want. I am a leader who has got 78 legs. If I can only use 2 legs, what should I do with the other 76 legs?
I have written a complete essay in PDF that you can download from this website if you want to learn more. The title of this essay is, Binary! Oh my goodness! Is this the marketing plan you want?