!!For the books:
* FanNickname: "K. Ron" (after L. Ron Hubbard) for Kristy and "[=BSCult=]" have become popular on some snark communities.
* KeepCirculatingTheTapes: A good portion of the series is out of print. An attempt was made at a reprint but stopped at only a few due to poor sales.
* NamesTheSame:
** Two characters are named Sabrina Bouvier - a child beauty queen that BSC meets in ''Little Miss Stoneybrook ... and Dawn'', and later a classmate at SMS.
** {{Lampshaded}} in ''Here Come the Bridesmaids!'' where the narrator acknowledges that both the [=BSC=] and the W♥KC have a regular sitting charge named Ryan [=DeWitt=], and no, they're not related.
* TechnologyMarchesOn: A big deal is always made of Claudia having her own phone line for them to use as the Babysitters Club number. Nowadays, most (if not all) of the girls would have cell phones.
* WhatCouldHaveBeen: A spin-off series called ''Morbidda Destiny, Teen Witch'' was considered, but scrapped when test audiences reacted poorly.

!!For the TV series:
* RetroactiveRecognition: A young Creator/ZachBraff plays Dawn's love interest in an episode of the TV show.
** Music-wise, the singer of the opening theme, Emily Bindiger, would later go on to collaborate with Music/YukiKajiura and provide vocals for a few of her soundtracks, such as ''Manga/PandoraHearts'' and ''Anime/ElCazadorDeLaBruja''.