How exactly can you change your user name? I am struggling to find that option. And yes, you're right!
You ask Bryan (Casinomeister). He has done this before for others, so I see no reason not to allow this for you given that by using your own name, Google is bringing your earlier thread up. I have checked this by searching on your username here, and it appears on the second page, which is right in the firing line when it comes to a potential employer digging for the truth beyond any possible SEO sanitisation. It is at odds with the rest of the results that show you as an aspiring model and singer/artist.
You could always try telling them that it's a case of mistaken identity, either two people with the same name, or someone employing the normal practice of using a fake or made up name as a forum username, which by an unfortunate coincidence happens to be the same as your given name. The completely out of character nature of that one result from the rest of the hits could support this, limiting the potential damage whilst you engineer a more permanent solution.
A recent development within the EU may also help if your prospective employers are using Google from an EU IP address. It's known as "the right to be forgotten", and a recent victory over Google by one man over it's link to an old article about financial difficulties some years ago showing up and damaging his chances of getting a job has caused Google to enter "damage limitation mode" whereby it is processing a large number of "rights to be forgotten" requests via an online request form.
Casinomeister has a policy of not censoring (removing, in other words), historical threads, however a change in username is allowed on a case by case basis, and would achieve the same results.
You would then have to check that the search results have been properly cleaned up by searching on your name as a prospective employer might, ensuring nothing you don't want seen comes up on the first few pages of results.
Your Facebook also comes up in a Google search, so if you have ever posted about the matter there, it can still end up in the hands of a potential employer. "Liking" any casino or gambling related pages, groups, or businesses from your Facebook profile could have the same detrimental effect.
