This lists orphaned talk pages. This works via a DPL query workaround since #ifexist is limited to 100 instances, so there is a bit more work involved in removal. These lists are pages with a talk page - If there is a redlink, it means that main page doesn't exist but still has a corresponding talk page. Navigate to the redlink's corresponding talk page and delete it.
Currently all blue links are pages with talk pages, so if we get too many to filter properly, I'll write a script that makes it display only the redlinks.