LiveJournal has been hit by flak lately for egregious net-nannying. It's explained in some detail here.
LiveJournal allows users to specify "interests," such as "music," "cats," and "science fiction." Users can search for other users with particular interests. At some point, without telling the public, LiveJournal added a clumsy set of restrictions on interest searches, based on a substring of the interest being requested. Thus, you can't search for "spice girls," because it has the substring "spic." You can't search for "pedagogy"; it has the substring "dago." Why it blocks searches for "raccoons," "concerti per fagotto," and "do-wop music" is left as an exercise for the reader. (Update: As of the evening of December 13, LiveJournal has removed "spic" from the list of blocked substrings, while apparently leaving everything else the same. This only demonstrates that LiveJournal is aware of the problem and is responding by caving in to the pressure group of the moment, such as Spice Girls fans.)
According to some reports, this "feature" has been around for a while but somehow has only recently been widely noticed. The timing of its discovery is bad for LJ, as it follows hard upon the addition of the unpopular "flagging" feature which allows users to report "offensive" posts and keeps kids under 14 from reading anything that contains "adult concepts"), and the acquisition of LiveJournal by the Russian company SUP, which has people worried about risks to their confidential information.
Sites based on clones of the open-source LiveJournal software are having a field day. GreatestJournal got so many new users that it begged people to go to InsaneJournal instead. InsaneJournal, in turn, has just upgraded to a more powerful server.