Since it is crypto gambling website, I suggest that you consider advertising it on this very forum because most of the cryptocurrency gamblers can be found on this forum. You can start a signature campaign or contact the Administrator of the forum to help with that.
In case that steffson wants to advertise through the forum, this is where he needs to bid for a slot
https://bitcointalk.org/index.php?topic=2716553.0 and as for signature campaigns make sure that he'll get a signature campaign manager to start out his advertisement throughout the entire forum so it will make his ad more visible to the readers and visitors of btctalk.
The forum itself will be able to help them promoting the business by participating with ads so every gamblers who visit this site will be able to notice the name of their business and will be able to check it out since the forum really have a huge traffic, that alone already will give them big exposure then like what other gambling site did like what I'm carrying right now begin to find a good campaign manager and start your own campaign too.