You can set the privacy of your post on an individual level -- want to post something exclusively for your followers instead of to the public timelines? You can do that here!
If you're more of a private person, you can configure the default setting for this in your account preferences.
This means that conversely, you can have a locked, private account that puts out a public PSA when you need to ✨
A Mastodon instance specializing in Vocaloid, UTAU, and anything relevant to vocalsynth culture.