Short answer: The best thing players can do to fight that is to edit those pages and delete their content. In theory if we keep denying the spammer his links, he'll stop bothering to make them. He's spamming many wikis across the web (in a misguided effort to increase his Google rank), so if our's starts being too much trouble, he'll just skip it.
Longer answer: The better way to stop him would be to make it harder for him to create the links in the first place. Right now he's using automated software that signs up for a new wiki account every time he makes a page, and that software has learned our questions ("what's the dwarf city?")
I asked Rahvin to switch to a new set of questions back in December but ... the dude doesn't even play here anymore (and hasn't for
years), so I really can't fault him for not updating them yet. And even if he did, the spammer might just learn the new set (at
some point if we keep changing questions he'll give up, but who knows when that will be?)
The more common solution to this problem is to use a "CAPTCHA", because those screw up automated signups. In theory
the extension we use to ask the questions could instead be configured to do a CAPTCHA check ... but guess who would have to edit the config? Rahvin (or Rogean), and neither has the bandwidth ... so the best we can do for now is delete the content.