For the books:
- Fan Nickname: "K. Ron" (after L. Ron Hubbard) for Kristy and "BSCult" have become popular on some snark communities.
- Keep Circulating the Tapes: A good portion of the series is out of print. An attempt was made at a reprint in The New '10s but stopped at only a few books due to dismal sales.
- Technology Marches On: 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.
- What Could Have Been: A spin-off series called Morbidda Destiny, Teen Witch was considered, but scrapped when test audiences reacted poorly.
For the TV series:
- Retroactive Recognition: