I am against including lists of fan cards on the wiki.
At the most, there should be one wiki page about fan cards in general that says: There are fan cards. Possibly talk about the pitfalls of making fan cards, how to make and play with your own fan cards (and others), and/or include rinkworks' guide to making fan cards.
Then it links to the Variants and Fan Cards here on the forum (and maybe also the stickied threads) but not to BGG at all. But as far as lists of cards themselves on the wiki, I am against. Lists of fan cards and fan expansions here, though, would be a better idea.
Archivist is the only fan card that should have a chance at getting any mention on the wiki because it has the distinction of being played on Iso. I don't even think contest winners should be on a wiki page. Those are good cards, but more about "forum fun-times" than part of Dominion itself.