Thanks for your comment, because that shows me that I need to better explain this concept. The idea is that you have configuration files where you - the user -

Thanks for your comment, because that shows me that I need to better explain this concept. The idea is that you have configuration files where you - the user - write down all the domains, companies, etc, that you want to get search results from. So if you never put that spammer's domain into your local config file, you will never see their results. But since managing all those config files by yourself might be a lot of work, and because less technical people probably can't do it, you can alternatively subscribe to someone else's configuration file so that whatever they add to their config is added to your config automatically, too.