By the way, I just want to remind you to check email every Friday because the fact is exclusive promo free $ 5 is sent every Friday to lucky users, you have 3 days to claim it before it is scorched.
I got it once but that was a while ago, but unfortunately I was late in claiming it so the code has expired, duelbits has quite a lot of types of event and giveaway to its users, not only via email but also on twitter and so on their instagram.