I currently maintain accounts at both https://app.thestorygraph.com/ as well as https://www.goodreads.com/. I like storygraph because of the UX, charts/recs, and because it's not owned by Amazon, but I like goodreads because that's where all my friends are.
I have maintained my Goodreads since at least Jan 2022, and my Storygraph since Jan 2023.
Resolves to YES if and only if at least two of the most recent three books I have read by June 1st 2023 are marked as "read" in my storygraph profile by resolution date. Realizing on June 1st that they aren't and then deciding to mark them does not count. I read about 4 books/month.
I will not bet on this market.
See also: https://manifold.markets/LucasSato/will-i-still-be-maintaining-my-good
I never used goodreads like a social media site. It was always clunky. I basically have always used it as a public facing excel sheet where i log my to read, currently reading, and read books.
Other than that, I dont even use the site much except when looking up the blurb of a new book i'll read. So, I'd be happy to switch to another app if porting is easy