Quark's

Here's a TechCrunch article on the topic too.

First of all I love this idea, especially for nonprofits, universities and governments.

My biggest question is how moderation will work. The "point" of federation is that each instance can moderate their own way, but presumably the paid moderation will be in the style of mastodon.social, which isn't bad, but not exactly in the spirit of the Fediverse.