I don’t know much about this specific company/website, but I looked at them just now and to be honest, it’s not sitting well with me. For starters, I couldn’t even figure out what the whole “business model” was based on. And that’s usually the case with Ponzi or pyramid schemes. I suspect its something along the lines of a pyramid scheme where you make money by bringing in other paid members, but I am not sure.
Often, what happens is that we run into unscrupulous Internet Marketers (IMs) who have less-than altruistic intentions of extracting money from you rather than helping you to make it. However, this isn't something new. People have been falling for networking marketing, pyramid schemes, and affiliate marketing scams since before the start of the net.