Just wasting time using CMC as the promotion for gambling platform, most of their visitor a cryptocurrency user and trader, not a gambler may be only a few percentages. If you want to know how much CMC rate for using their website for ads, is around 25K USD.

The case of "Freebitco" they already got more than 30 million user, I believe is already enough their website one of the website popular on cryptocurrency space. Instance using CMC as the advertiser, I would recommend them paid some streamer, youtube to playing on their website. Of course, a person who really active on gambling, so you can get a new users with a related topic of the video and the website his promotion.

And, freebitco already got a free advertising from his name. Went everyone looking a topic about bitcoin, some of them will try to search a topic "How to get a free bitcoin" the result will come out "freebitco" since we have a name "free" and the website providing a faucet.