http://r3skflyxamq2nz4kdiqoqf46hd2owy3jjnsjpmeldkxnsyyr6tulkwqd.onion/post/35486
For example, hypothetically, if you are a “fedipedia” author and you are writing a “fedipedia” article about a video game, and you mention a particular feature of the video game, you can include in your “fedipedia” article a link to a topic about that particular feature on “wikia-gamipedia” or even “the-games-own-wiki.site” and interact with and maybe even edit that content without needing to make accounts on all these other wikis.