The scopes of many sites overlap, e.g.:
- English Language Learners and English Language and Usage;
- AskUbuntu and Unix and Linux;
- Math, MathOverflow, Cross Validated, and Mathematica; and
- any language site with Language Learning and Linguistics.
Currently the "Related" list of questions is restricted to questions for that particular site. It seems natural to extend this to either:
- add an additional, short "Related network questions" list, or
- allow a limited number of off-site questions within the "Related" list, highlighting the site they're from, and maybe throttling the tf-idf for off-site questions.
My hope is that it can identify questions that are already asked on other sites (cross-site duplicates), and this knowledge can assist writing answers.
Question: Would a "Related network questions" list be possible and worthwhile?