I think that Arturia should seriously consider implementing Google reCaptcha to the forum. I am suggesting this as reCaptcha can work in the background (it does not have to present users with a bunch of fire hydrant photos to identify before someone can post). As reCaptcha runs in the background of the Arturia forum, it can automatically block known bad actors from accessing the site. I think this would greatly eliminate the manual spam monitoring that moderators currently have to do, and allow them to focus on more fulfilling activities like discussing Arturia products with legitimate users.
From the Google reCaptcha homepage:
"reCAPTCHA uses an advanced risk analysis engine and adaptive challenges to keep malicious software from engaging in abusive activities on your website. Meanwhile, legitimate users will be able to login, make purchases, view pages, or create accounts and fake users will be blocked."
Hope these thoughts might be of assistance.