Existing blogs can also be ActivityPub enabled

The point being that in order to join the fediverse you don't have to run a mastadon like server or join a mastodon instance, you can simply activitypub enable your existing communication platform. If you're blogging on wordpress you can do this using the ActivityPub plugin. I will note that the unmodified plugin doesn't allow replies via activitypub, but I've got fixes for that:

https://github.com/jejb/wordpress-activitypub/tree/add-re...

If you want to see it in use, it's on my blog site: https://blog.hansenpartnership.com and you can see what it looks like in my test mastodon account which boosts my blog posts into the fediverse: https://mastodon.online/@jejb