Besides of being a website to earn satoshis, it can also be used as a digital Bitcoin wallet. Starting from 0,00030000 BTC (about 3 dollars), you can send your earnings to other Bitcoin wallets. If you transfer your values to your Free Bitcoin wallet, you earn 4.08% annual interest on your balance.
Unfortunately, you can not transfer your earnings to a bank account. For that, you will need to have another Bitcoin wallet with this option. It can be Coinbase, a well known and secure digital Bitcoin wallet. This way you can send your values between wallets and then to your bank account.
Referrals Program: You earn 50% on what your referrals make on the main dice + free lottery tickets + reward points.