Even if you are active on social media then also it's hard to claim these promo codes as you will find huge people having access to it within seconds and they can be redeemed for a limited number so you loose the chance.Have never claimed it so not indulging in them from few time and playing with my small bets only.But it's every gambler choice how they want to play.
This topic has already been discussed a couple of times. All the popular casinos who gave out the codes, have a huge follower base on social media so you need to be very lucky to claim one (just be online at the moment they give it out).