There are hundreds of gambling websites in bitcoin community , if a new one comes out , what should that new website do to stand out and gain traction?
Good affiliate program, nice daily and weekly prizes, giveaways, deposit bonuses, 24/7 support, fast depositing and withdrawing, a lot of different games...
For me all this things are important, I like to feel safe when I deposit my money in casino. Of course nothing can happen over night, good reputation comes with time.
People can recognize quality, so if you make your players satisfied they will spread good words about your casino and that is best commercial.