Where the facts come from
This page shows where the facts on this site come from. Every number here is counted from the site's own data.
- 466 finished Books like lists
- 10,606 book facts with a named source
- 99% quoted word for word
The facts
10,606 facts are shown on book and author pages.
10,557 of them are quoted word for word from a source.
49 use other words and were reviewed before they were shown.
230 more are held back and not shown.
1,259 of 1,259 book records link a source for every fact.
122 of 122 author records link a source for every fact.
The sources
Here is where the shown facts come from.
- Library of Congress 6,540 facts
- ISBNdb 1 fact
- Publisher pages 206 facts
- Author and series sites 0 facts
- Wikidata 2,662 facts
- Open Library 821 facts
Other named sources
- Catalog audience band 241 facts
- Books like trope tag 61 facts
- Books in order series record 37 facts
- Common Sense Media 37 facts
How the facts are checked
Fact check
Last fact check: not yet published.
Match check
Last match check: October 27, 2026.
40 matches were checked.
40 right, 0 partly right, 0 wrong.
Pages still being checked
967 pages are still being checked.
Search engines are asked to skip them for now.
Books like lists
685 pages in all. 466 are finished. 219 are still being checked.
- Too few checked matches 157
- Another reason 48
- Still being checked 13
- A match is still being checked 1
Book pages
1,272 pages in all. 524 are finished. 748 are still being checked.
- Too few checked matches 670
- Another reason 56
- Still being checked 22
See a mistake?
Use the report page to tell the site.
Counted from the site's data on November 6, 2026.
Common questions
What does the Why line mean?
It names what the two books have in common, using only facts found in both books' catalog records. Tap What both books share to see those facts and where they came from. When the shared facts are few, the line is short. It never quotes reviews, ratings or reader reactions.