That's generally true, but if it's a historical source that's still available elsewhere, then the particular link doesn't have so much historical value.
Occasionally I'll post archive.org links or similar alternatives as pinned top comments, so readers looking at the old thread can have access to the article. In the past we've changed the top link to archive.org also, but I'd rather not encourage that.
Occasionally I'll post archive.org links or similar alternatives as pinned top comments, so readers looking at the old thread can have access to the article. In the past we've changed the top link to archive.org also, but I'd rather not encourage that.