[cross-posted to gmane.org.wikimedia.textbook, gmane.science.linguistics.wikipedia.english which I hope are the correct groups]
Special:Booksources on en:wikipedia has an Errata option, which takes you to a special section on en:wikibooks where---obviously enough---errata corresponding to various ISBNs are collected.
I am not aware of the history of this cooperative venture, but I am somewhat disturbed by the fact that a group of people at Wikibooks are trying to have this feature removed without apparently letting anybody at Wikipedia know. This seems to be ostensibly on the grounds that whilst it is to do with books, it's not to do with **wiki**books.
The bit that disturbs me is the impression I get from the discussion that cooperation with Wikipedia is somehow distasteful to some Wikibookians, and that they shouldn't have to help out just because we share a four-letter prefix.
Where should this be discussed, and what is the official status of the "Errata on Wikibooks" feature?