There is a plenty of gambling websites, if not all of them, that have referal program, under which you can get rewarded for attracting new playing users.
If you try to google out how people promote some top sites, you will see that they make youtube doorways, how-to sites about 'earning in internet', and other shady and snake-oil stuff.
I'm wondering if someone here successfully worked as marketer and can share the success story about promoting such websites using his own channels, by building community of involved players or with any other methods (don't share your scheme, just a story of success).
Thanks for answers.
Getting referrals is very difficult, your only option is to try to get referrals with a long term strategy and create a website related to gambling and promote your affiliate links there, but his option takes a lot of time to build up so it is not easy but if you build your own website you can earn money no only through referrals, you can place ads and even sell some products or services related to gambling if you have them.