If you are an official for the casino then I will suggest the same as above user, Buy a copper membership which will allow you to post image. Then post a nice ANN instead of this simple text based contents.

I am guessing, you have not study your competitors on the forum yet. Everyone wants visually attractive contents. If you have your own designer then ask them to design you an ann however if you don't then feel free to contact me, I can help you in ANN design and bitcointalk marketing.

PS: It's not only me but there are many professions we have in bitcointalk who can help you in any service you need. Check this out: [Overview] Bitcointalk Services from Bitcointalk Members