Good news: people are generating interesting ideas and methods suggestions in response to my initial post! Thanks so much to everyone who h
I just did whole lot of noodling about gathering data about fandom lifespans -- with example spreadsheets! Feedback welcome if you have it -- at the end of the post I ask about whether it makes the most to start with movies/TV/other, and what time frames to use, and whether my example spreadsheet contains the right data.
(I am experimenting with posting things here and reblogging them in the Fandom Data Projects community vs. posting things in the community and then sharing a link here. You can comment on this post if you don't want to participate in the community. Other people in the community are also making posts about this topic and other cool things, though -- if you're into fandom data, you might like it! Just sayin'. :D )