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:
➡️ https://wordpress.org/plugins/activitypub/
The plug-in is by @pfefferle in association with #Automattic, one of the major players behind WordPress itself.