But Wikipedia isn't a primary source and presumably it could (and does) link out to those personal sites.

Unfortunately you then run into "reliable sources" and "notability" battles with other wikipedians over citing personal websites.

For reference, official rules are https://en.wikipedia.org/w/index.php?title=Wikipedia:RSSELF

> True, but i feel like central repos like wikidata are quite a bit different from the original vision of many small websites all interoperating into a semantic web.

One of the main roles for Wikidata is to act as a directory for these "many small websites" that enables them to interoperate seamlessly. You can look up a real-world entity on any website that Wikidata supports and use a third-party service ("Entity Explosion", see https://www.wikidata.org/wiki/Wikidata:Entity_Explosion ) to get links to the same entity as it appears on Wikidata and other sites.

What is IPFS though if not a glimpse of the future? Distributed makes more sense to me and P2P concepts are being heavily researched with all the blockchain hoo-ha!

A proof-of-concept that's generated a lot of buzz but not a lot in terms of concrete or unique usage?