Correction (10/11/24): Lebleu reached out to clarify a few detailed regarding the motivations behing the user posting AI-generated materiel and the examples mentioned. These changes were applied...
Wikipedia has a new initiative called WikiProject AI Cleanup. It is a task force of volunteers currently combing through Wikipedia articles, editing or removing false information that appears to have been posted by people using generative AI.
Ilyas Lebleu, a founding member of the cleanup crew, told 404 Media that the crisis began when Wikipedia editors and users began seeing passages that were unmistakably written by a chatbot of some kind.
Require someone that wants to add stuff to pay a small amount to the Wikimedia Foundation for activating their account and refund it if they moderate a certain amount.
Seems like that would be an easy problem to solve... require all edits to have a peer review by someone with a minimum credibility before they go live. I can understand when Wikipedia was new, allowing anyone to post edits or new content helped them get going. But now? Why do they still allow any random person to post edits without a minimal amount of verification? Sure it self-corrects given enough time, but meanwhile what happens to all the people looking for factual information and finding trash?
Croudsourcing is the strenght that led to the vast resource and also the weakness as displayed here. So probably there will be a need for some form of barrier. Hence my suggestion.