Google SEO
September 2016 — Search Engine Land
What did Possum change in local search?
Possum filtered duplicate or similar business listings sharing an address and made results more sensitive to the searcher's precise location.
Further analysis
Use this entry as an audit checkpoint. The cited source establishes the context; the direct answer identifies what to check before choosing an action.
In SFT, this topic relates to Trust. Check whether the signal is visible on the page, connected to the rest of the website and supported by understandable evidence.
Related search terms include Possum update, local-pack deduplication. Use them to describe the issue in a brief, audit or answer page.
Applying SFT
Trust requires observable evidence: sources, consistency, citations, identifiable authors and verifiable claims.