I recently started to earn money online, but as I see it, those sites let you earn a very low amount of money (duplicates of 0.01 mBTC), but I've seen in Blockchain.info's history that people are earning huge amounts of money, from tens of BTCs to even 500BTC. How do they do it? Provably not using mining, otherwise they won't be using Blockchain.info, or they are only using it to transfer money anonymously? Of course that in most of the transactions you will see only an address, and not who owns it, besides a few sites that Blockchain.info knows their address, so these records doesn't really help me, also because there is no way to contact the owner of the address.