alt Hacker NewsThat is correct. However the jagex funding is not really enough[1] so they added ads. The League wiki seems to be also under this model, but I suppose they got a better deal. The Minecraft Wiki doesn't have any ads at all, and it's just been feeding off by the runescape wikis.
Woah, I didn't know that what jagex has paid for basically only covers the infrastructure. It's crazy considering how central the wiki is (because the game is very far from "self documenting"). Thanks for the info!