Hello,
To everyone I propose a small test. Deposit a few cents on bitfinex. Go long. See that you are paying interests on your margin. Then close your position, move your money to the deposit wallet and lend your money. See that you receive interests on your money. Then withdraw your money.
There you go, you see that the borrowers really paid the interest listed on Bitfinex, and lenders really receives the said interests.
In the meantime, see that Bitfinex doesn't work AT ALL like how bitcoinica worked. Which coincides with the fact that the code is original and totally rewritten since 8 months.
So you can experiment the business model first hand, and see that it's not just a concept, but it is what it claims to be
Thanks
Raphael
Bitfinex
PS: About the unlimited credit line, see these:
https://community.bitfinex.com/content.php/32-Regarding-recent-team-changeAnd compare with how forex broker uses credit lines on a weekly basis, as opposed to us making 1 credit line of 150,000 USD to a known investor, with 1.5 times more in BTC collateral on Bitfinex (by the said investor), paid back a few days later, in a time of crisis to avoid lenders making a loss.