The question is this: What happens when you ignore someone, so you don't have to see their posts, but they keep commenting on the posts of others that you follow, or on your posts? That question needs answering. I don't think its a good idea to hide all of the comments from someone you ignore, because you might lose part of an otherwise good conversation. But what is the best way to deal with it? We haven't had to cross that bridge, because there aren't any abusive users on the site (yet). But I think its a good topic to think about so that we can be prepared not if, but when, it comes up. Because as you point out, when a site becomes popular, destructive users inevitably follow. Its a good crowd source question. How should Hubski deal with a hypothetical abusive, or otherwise destructive user, bearing in mind the user-centric philosophy of the site (i.e. keeping any kind of moderator/curator as an absolute last resort)?