The Fediverse is quickly changing and probably we will have access to more features, but right now, a few things should work:

• You don’t have to create new accounts on different instances, in order to create posts or vote. It’s just like Mastodon and other platforms that use ActivityPub.
• If an article might be interesting to other programming communities, you can cross-post them to !programming@programming.dev or other popular communities, such as !programming@beehaw.org