If you have a WordPress-powered blog, you can turn it into a Fediverse server and people will be able to follow the blog from Mastodon etc.
More info on how to do this here:
https://fedi.tips/wordpress-turning-your-blog-into-a-fediverse-server/
This works through the AcitvityPub for WordPress plug-in, which has just been updated to version 1.0.0:
https://wordpress.org/plugins/activitypub/
The plug-in is by @pfefferle in association with #Automattic, one of the major players behind WordPress itself.
@feditips @pfefferle Cool! Now do Blogger. :D
Unfortunately Blogger isn't an open platform. There's no way to host your own Blogger, it's effectively just part of Google.
WordPress is free open software so anyone can host it.
@MarioMakesStuff that would be also nice! But as @feditips said, this has to be done by google because it is a closed platform!