I have frequently visited stackexchange.com/sites to look for the right site to ask a question. Yet I still make mistakes, that I think can be prevented, and thereby save time for moderators. And remember, most questions are created by inexperienced users.
I know that one may educate himself to solve this problem, by reading the On-Topic help center page for each site. Which lists which topics are on-topic, which are off-topic, and which belong to a sister-site. Still there is a lot of confusion going on, this is supported by the way the on-topic page is written, here are some quotes from the help center page:
(Note: All questions about RESIDENTIAL/HOME networking and CONSUMER-grade equipment, are explicitly OFF-topic.)
I'm confused as to where my question belongs; there are so many sites!
I know that there is also a search bar at the top to look into all sites, but it doesn't help to select the right site at all.
These ideas might help coming to a solution:
- 'Search by tags' function on stackexchange.com/sites, where you type/select some tags with auto-completion from all sites together. And then you'll automatically find which site should fit your question.
- Next to 'Similar questions' that avoids duplicates, perhaps also show related Stack Exchange sites when a question or its tags seems related to another site - so users may discover sister sites more easily.
- 'Ask Question' button on stackexchange.com/sites, that will try to hint at the right site for you - or none if no match found.
These ideas would basically automate the on-topic help center page. This is only for suggestion, not automatic redirection.
Just as there are similar questions for duplicates, there can be an improvement, that will also significantly reduce off-topic questions.