Marketing indeed plays a big role in the success of the gambling business and Roobet also know this as they always come up with different competition and contest in the best interest of the company and the gamblers. Roobet is leading the way in marketing and other casino can also follow them.
Many casino put in a lot of effort and money to market their website but they all have their own focus. Roobet does marketing in the form of art contests on this forum (and other competitions on the site), while other casino do more marketing on Twitter with giveaways, ... I need to admit that I miss that the competitions that Roobet was doing on this forum in the form of "guess the correct slot" or "guess the right wager".
serious on following Roobet promotions and its true that each company does have its own considerations on which medium or part they would really be putting some emphasis.
Whether they would really be going with typical soc med promotions or would be just focusing on services section like art contest or whatever things they do like.
As long it do create some noise or attention then this is how things to be counted.