In aggregate; 5 instances, less than 5 communities, and more than 69, nice, blocked users.
I don't mess around. I don't hesitate to block people who argue needlessly, make my experience less informational or less entertaining, troll, or disregard arguments made in foundational logic to push a point of view or 'win the argument'. Similarly my instance ignores downvotes and does not display them; as with most platforms which behave similarly to reddit; they simply do not work outside of your personal, local account, local instance, user-sorting context.
I'm certainly concerned that now that this software has been covered in PopSci; that it will certainly suffer a needless onslaught of DMCA and other lawsuit-related shenanigans. >_>