Complex sentence: "Ephemeral popular culture" (characters of TV series, TV programmes, etc), promotion of not-so-known people (unknown singers, one-book writers, bloggers, etc) are thought to be more tolerated in other wikipedias.
Split into simpler sentences: Ephemeral popular culture (characters of TV series, TV programmes, etc). Promotion of less well-known people (unknown singers, one-book writers, bloggers, etc) is thought to be more tolerated in other wikipedias.