How is it possible to claim giveaways, when codes were posted weeks ago? Once I tried to catch twitter giveaways, but as soon a code is posted, army of bots immediately grab it and use it. I even think there is a script, that check Duelbits twitter account and make automatic claims.

I am amazed by amounts you have managed to claim. I am more used to seeing cents in such giveaways, and only once saw xmas giftbox giveaway, that gave such huge prizes.