I keep a ledger of every profile, article, and directory entry that points at the sites I run. For a while the ledger was updated the obvious way: do the work in the browser, see the success toast, mark the row done.

Then I wrote a checker that fetches every recorded URL logged out and asserts that an anchor to the target domain actually exists in the returned HTML. It immediately found six entries that were marked done and had no link at all.

None of them were mistakes in the sense of "I forgot to save". Every one of them saved successfully. The link just did not exist on the public page.

The six

A dev community bio field. The profile page shows the URL as text. It is never wrapped in an anchor. The form accepted it, the profile displays it, and it is worth exactly zero as a link. The same site has a separate single "blog" field that is linkified — one slot, not the bio.