WebSub/ActivityPub are now both W3C standards.

https://www.w3.org/TR/2018/REC-websub-20180123/
https://www.w3.org/TR/2018/REC-activitypub-20180123/

I find it really weird that no-one at Google actually was involved with this since it's in our interests for web crawl, publisher support etal..

https://www.w3.org/TR/2018/REC-websub-20180123/

#googplus

#googplus