Maybe you are not that active in gambling section back then or not really a gambler that's why you missed those giveaway's because if does then you are surely enjoying those till now .
goodthing that I am lucky then .
I was gambling at that time but not aware about duelbits but once I came to know about it started playing over there and have participated in few giveaways and also been lucky few times although not many times but still good to get some rewards.They will continue to do and maybe even more promotions as time pass by.