So, we could change the question for account creation and its answer, below
"To protect the wiki against automated account creation, we kindly ask you to answer the question that appears below"...
Is that one of many questions, and the system chooses one from a pool?
Type the second letter of each word - yheefao
Which day follows Saturday? - Sunday
This question tries to prevent an automatic creation of what? - account
Those question are easy to break since spammer are actually cheap human workforce and they can actually read and follow simple instruction, that's why they can even beat picture puzzle and crossword.
When we deal with questions-answers, the answer must be hidden elsewhere.
"Hidden somewhere" like the "Internal discussions" of the modding club?
So someone who would want to create a wiki account could be delayed until they would create an account for AS and ask for membership of the modding club. When confirmed by the modding club leaders they could access the "Internal discussions" where I would put a thread with the wiki account creation password?
I will ask hmoeller if he wants to be able to check for new members of the club. If he wants to then I would like him to be leader of the club as well. But I will post here again.