only the moderator can prevent...
his message board from being hijacked. most boards specific to a subject have guidelines restricting the subject matter. perhaps instead of "card counter", the domain name might be changed to reflect the actual preponderance of the posts. that'd only be fair to those surfers who might expect that a "card counter" site might have something to do with playing some form of casino games. the unwashed might be fooled into thinking that the site contains pages for 21 and other than 21 games, much like the format used on a few other boards.
this spamming of a site is little different than those prolific, spam emails that include false key wording in the title line. i trust that by now, most internet users are sharp enough to delete such messages lest they contaminate the pc. and anyone dull enough to open links offered in a spam posting should expect some exercise to detox the pc afterwards.