Some promotions are time sensitive which means the earlier you get the promotion, the better it is for you. On the other hand, some promotions are only listed and offered on the social media handles like Twitter and not announced on the main gambling site or even on this thread. I do not know what is the motive behind those promotions.
Are they meant only for the Twitter followers to grab those giveaways as not all gamblers are following the gambling Twitter handle and some may rarely visit Twitter???
It is possible that Duelbits wanted to have more player to support and pay attention to their twitter handle, maybe one of the reason why they purposely leave the code on twitter and not share it on other platform. As stated code are to be redeemed on the Duelbits gambling platform so the code is for everyone and not only for twitter users.
The motive behind it is how the promotion can reach more people quickly and proves to work well.
To reach people faster isn't it much better to put the code on all their social media platforms and other communication platform?
So far, Duelbits uses Twitter as one of its promotional media and many people follow Duelbits and expect to get various kinds of promotions provided by Duelbits.
And this has always been a bone of contention for those ready with their account to get that promotion.
But if we find it hard to get it, we don't need to follow it and wait for further notification from Duelbits in this ANN thread.
Twitter is the more popular social media platfrom so it is not surprising that many casinos use it for their marketing promotions and code giving activity.