I think it depends a lot on your budget for marketing. One of the most popular strategies big crypto casino use are influences who promote their casino by streaming for hours everyday. This would be included in the social media marketing, along with building a strong community and reputation on other social media platforms.
Talking about bitcointalk forum, a signature campaign is great but not necessary if budget won't allow it for a consistent amount of time. You can still get a lot of attention by offering interesting challenges, contests and bonuses n the forum.
There are other promotional activities that a new casino can offer to the community aside from running a sig campaign especially for those newly-launched casinos which are not equip with large funds. Below are some of the offerings that they can give to their players -
> lucrative or attractive deposit bonus
> race contest / wagering contest
> art contest with good rewards
> bug bounty / social media bounties
Go get someone to be a brand ambassador, like what Stake with getting Drake and then BK8 with the legendary Manny Pacquiao.
Obviously though if you're just starting, maybe it's going to be expensive to pay this personalities. But in the end, it could give you a return of investments. Drake has a lot of followers and famous, same with Manny. So they could bring a ton of gamblers into your website and obviously, gonna be win-win situation for you.
And as long as you been busy here or at least answering queries in your ANN thread, then it could be good promotions too in your end.
The reality is, not many can afford to pay for popular personalities as their ambassadors. It is not a must anyway to employ celebrities to earn credibility. This will be built over the years of operation. As long as you are taking care of your players, no withdrawal issues and other existing complaints, patrons will stay if you they see the site is trustworthy.