Migration-Wreckage Link Mining

Migration-Wreckage Link Mining
Site migrations leave a trail of broken inbound links. Harvest them.
1 — Identify a competitor or relevant site that recently changed domain or structure.
2 — Pull its old-URL backlink profile from before the move.
3 — Batch-check those old URLs; isolate the ones that 404 (bad redirects).
4 — Trigger: dead old-URL with relevant inbound links = your prospect set.
5 — Build a replacement for the lost content; pitch the linking pages.
6 — QA gate: verify the target truly 404s, not just slow-redirects.
Automation fits at step 3 — status-batch the full old-URL list in one pass.
Definition of done: every botched-migration 404 with relevant links is mapped to a replacement and a live linking page.