@dansup I agree with others that manual account review is a good solution to combat unwanted accounts on an instance. Further, I don't see a problem with deleting an account if it never made any posts, after a reasonable length of time. I also think your idea in another post about letting users limit the number of posts they see from each account they follow in a given amount of time is good. Businesses will show up on fedi, leave it to instances and users to naturally defederate and block.