Tags are used to organize titles on FanCruft. They are sets of words or short phrases that describe the traits of each title. You can read more about the use of tags on Wikipedia. Tags on FanCruft are seperated by spaces (commas have no effect), use_underscores_to_separate_words in a single tag, and are prefixed with a minus sign for negation. The tags fanservice, violent, watching, to_watch, watched, must_see, and worst_anime_ever have special meaning on FanCruft.