itcoin.biz claims to invest your Bitcoins in arbitrage, currency trading, mining and crowd funding while offering you interest from 1.6% to 3.1% per day. Everything seems to work as promised until an account holder attempts to make a withdrawal.

The site's FAQ states:

How long does withdrawal from ITCOIN take?

   Well not so fast! our attempt to withdraw was greeted with a message stating that all withdrawals are manual and will be processed within 24 hours. Really? Our withdrawal is on "pending" status  for several days now and we are slowly loosing hope to see any money at all. It will not break our bank though as we only deposited $0.60 worth of Bitcoins and even with such small amounts these guys are not able to deliver.

Earn Bitcoins without a deposit!