Making a fortune from arranging private bitcoin transactions

While some LocalBitcoins sellers require bitcoin buyers to identify themselves, some have openly advertised that they don't.

HELSINKI: Exchanges aren’t the only way to trade bitcoins and other cryptocurrencies. Some websites help to arrange private transactions between buyers and sellers. 

LocalBitcoins.com is a popular website through which buyers and sellers advertise bitcoins, setting their own prices and conducting trades privately. It is operated by two brothers in Helsinki who say it has about 350,000 active users from nearly every country.