@tchambers Via the ActivityPub plugin. Friends does ship a bunch of AP functionality that is (currently) outside of AP’s scope: the ActivityPub plugin handles outgoing content and incoming replies, Friends handles all incoming content and interaction (i.e. following people, handling boosts, likes, and replying, adding support for https://wordpress.org/plugins/enable-mastodon-apps/ so that you can use Mastodon mobile apps to view your feed etc.)
I just released the WordPress Friends Plugin https://wordpress.org/plugins/friends/ version 2.6.0. Biggest change: no local user will be created anymore when just following someone (via RSS, Mastodon, etc.). Other improvements include an improved status view on your local friends page, share posts on your friends page and more. For more screenshots see https://github.com/akirk/friends/pulls?q=is%3Apr+is%3Aclosed
