What business? What activities? On the website there is not a single word about fiat, they accept only bitcoin. That's why I said that I don't care about their legitimacy. I live in a country where bitcoin is not legitimate, so I do not care. And if it was about fiat then of course you were absolutely right, but it's not.
According to their site, they do something with your funds once deposited:
At the moment their service works, unlike those who are already failed. This is the main difference. And the chance is necessary because I need such services, and I am sure that I am not alone.
Ah the old "they are currently paying out" line. This is the nature of a ponzi scheme, they will pay out every time until suddenly they do not. They may be paying out now, but there will be a time where they will stop. Ponzis are not sustainable and eventually will shut down leaving many people with losses.
I'll ask you plainly, do you think they are a hyip/ponzi? If not, why?
Edit: Fixed quotes.