Gambling sites have different promotions to attract players to use and play on their sites. Most of them give out free coins when you register, giveaways, challenges, competitions and a lot more. I think other gamblers are also looking for site that are generous when it comes to this kind of promotion.
Yes, that is true. There are so many ways to promote gambling but make sure it is so hooked to play. Many of promotion in gambling is scam thats why some people will think twice before they visit the site. For me, to attract other people make some referral thats it will be a good proof that gambling is legit.
If they are scam I think they should be ban from market and only KYC projects should be allow to get promoted, if some scammers promote their projects in market the indicators should report it to the forum, and good projects should be promoted because they gives good and profitable future to the investors so I think it is good to promote them.