I federated this blog
Im officially part of the cool kids club of the decentralized web: I federated this WordPress blog with the ActivityPub Plugin by Matthias Pfefferle @pfefferle.
It seems to work: The plugin has created a mastodon profile that anyone can follow. New blogposts are automatically posted there.
Not sure if I can comment or reply with that profile. Time to explore.
@plunch welcome to the club 
@pfefferle@mastodon.social Thanks Matthias. I just learned that I have to reply using the WordPress Comments Function. Next I will find out how to make the gutenberg blocks for replies and reactions work.