Regardless of what you click, you'll be whisked away (in the same browser tab) to this fake "system scan":
(Perhaps unsurprisingly, since the early pioneers of this scare-ware advertising, Bonzi.com, have enjoyed special protection from Jimmy Wales.)
Essentially, this means every link to Wikia on Wikipedia is a potential infection vector for this questionable software. (Anyone moderately savvy with computers shouldn't be fooled, of course... but would the mythical "child in Africa" be expected to tell the difference between an ad and a real OS dialog?)
If Wikipedia has any scruples, it should cease linking anywhere to Wikia-owned sites.