DNS over Wikipedia
Wikipedia editors have noticed that people use wikipedia for this purpose (finding the current location of sites) and so they have started to censor links for sites they don't want to encourage people to access. Right now this mostly impacts sites few would condone, like 8chan or kiwifarms. But in theory the policy applies to any site with illegal material so places like the pirate bay or scihub could have their links removed at any time.https://en.wikipedia.org/wiki/Talk:Kiwi_Farms#URL