@the-ego-is-you runs the agorism channel. @richhersey runs the libertarian one. I admin the Liberty Professionals channel. Think of Liberty Professionals as a voluntary association, guild of sorts, for lovers of liberty.
It exists without separate webpages (libertyprofessionals.com will be for my security business, residential security consulting, and private investigation services), profit structures, or limitations to provide liberty minded people a way to network together for careers, barter, etc. It's a pretty open ended idea. Steemit is perfect for it, and hopefully one day soon we'll have communities to make it even more effective.
I've not seen those two channels. They probably don't need them with the ones we already have. :)