I think It's not a ponzi. You can buy FRST(firstcoin) from the public coin exchange, such as, livecoin.net and yobit.net.
If you would like passive income, just only put the coin into Firstcoin club. In each month, the club will provide 2-8% which FRST cryptocurrency will be paid, not fiat currency, USD or EUR like many companies do.
In Firstcoin club, the coin will be locked for 6 months, you can earn the income 2-8% every month. If the coin is unlocked, you can sell all of them or still keep them and get 2-8% income the same.
To keep coin in firstcoin club is a way to increase the price.
Low sell and high buy. What will happen with the price?
For team bonus- binary, direct, and matching bonus, they also will be paid with Firstcoin cryptocurrency only.
It's not like the money from new members to pay for old members.
What I talked about is only one of things and benefits from Firstcoin club.
Sorry for my broken English. I'm not a native speaker ^________________^