The best thing that you can do is just create a new signature campaign in here, it will attract a lot of users if you try to ask the participants to post on the gambling section only, because it will be a very targetted traffic, i do not know, just my two cents.
I agree, since this is really the biggest forum for crypto users then you can get a lot of traffic coming from this site. It is quite bolstering with gamblers and there are a lot of people that want to try something new. So I believe as well that this is the best place to be advertising your gambling site. Also, some of the best places to advertise are those cryto related blogs, trading information (coinmarketcap), and other platforms.
Famous casino provides a weekly Signature campaign for endorsement here in this forum, you will eventually see lonv running campaigns for casinos thru signature, though there are already more cryptocurrency related pages like icoschedule, coinmarket, exchanges etc., but it's much noticeable if you prefer putting banner here and social media sites like in facebook, twitter or any related media as long as gambling allowed in a said country.
Correct, signature campaign is the best way promoting gambling sites in this forum and you should run for long period of time, as you can see almost all the best gambling sites has a running campaign to continuous promoting their sites even small amount of fee the important you have more participants wearing your signature code.