That fiasco with "parental controls" blacklists reminds me of when I was doing admissions for one of UKs universities and suddenly we stopped getting any new applications.

School leavers are encouraged to search for universities online, using their school's computer facilities. However, the schools also have "duty of parental care", which includes some pretty severe censorship.

It just so happens that certain universities, whole counties in fact, e.g. Sussex, Essex, have the dreaded "SEX" in their names and so were filtered out.