A niche is a tag, usually attached to an Episode, which describes what’s going on in that episode.
See also: List of Niche Requests
Niches always come as an array inside the ‘niches’ key.
The following requests return niches:
Some niches have multiple-word ids (they contain a space).
The “18+ Teen” niche is named to be more search engine friendly. Some search engines prefer that the word “teen” be qualified to prevent legal ambiguity.