This message board used to be a phpBB located in the folder /forum/ and only 3 days ago I have converted it to VBulletin which is now in the folder /mb/.
That’s why the google toolbar shows PR 5 when you type in the domain and then it goes to PR 0 after it redirects to the new folder /mb/
It will take no time for google to reindex the entire board (large parts are already indexed after only 3 days)
You can check google.de and you will see this site ranks #1 for casino forum. You can also check the backlinks or check the backlinks of the sites already listed in the footer (like the galore site) and you will see that this is not a scam encase that is what you are worried about 