I'm sure there are. I'm also confident that they're politically-driven spammers who are simply banning anyone they had an argument with once... so not only are their lists useless to me for finding people to filter, they're equally useless for finding people to follow. Now that might not be the case, but since that's how such people behaved on Twitter when they shared blocklists I'd invariably have to go through those lists to see who was on them and try to divine the underlying criteria used for adding people to the list to know if it's worth anything... and, again, that's time and effort I'm not interested in spending when I've got better things to do.