Topic
Freshness
The smallest class, and the one with a hidden dependency: deciding that recent content should win assumes you know when the content is from. Google does not take a page's word for its own date, which makes dating a system of its own rather than a detail.
01Systems2
- 24BFreshnessTwiddler / RealTimeBoostFor certain queries Google expects fresh content — the concept is called 'Query Deserves Freshness' (QDF). FreshnessTwiddler gives current pages a temporary ranking boost. RealTimeBoost is the sharper variant for real-time events like severe weather or breaking news. Being current means ranking higher — but only if the query actually demands freshness.
- 25B/ODate triangulationGoogle checks a page's date by comparing three different signals: (1) the visible date in the article (bylineDate — easy to fake), (2) the date from URL, markup or timestamp (syntacticDate — also easy to manipulate), (3) the date inferred from the text content (semanticDate — can only be changed through genuine content updates). When the three don't agree, Google detects a 'date lie'.
02Deep Dives3
- FreshnessTwiddler: How Google Decides When Fresh Content MattersThe query-dependent freshness system — and the patent that reveals how update frequency, staleness, and link freshness become ranking signals
- Date triangulation: How Google Determines When a Page Was Really PublishedThe patent that reveals six different date sources Google uses — and why faking a byline date doesn't work
- Google Update History: What a Timeline of Named Updates Can and Cannot ShowGoogle names roughly ten updates a year and ships thousands of changes. The timeline is real, dated and official — and it is a filtered excerpt of Google's own communication decisions · also in Penalty & Spam
03Leak fields4
- B
bylineDateA visibly stated date — cheaply faked.Datums-Triangulation - B
syntacticDateExtracted from URL/markup/timestamp — cheaply faked.Datums-Triangulation - B
semanticDateInferred from the content — only fakeable through genuine updating.Datums-Triangulation - B
FreshnessTwiddler / RealTimeBoostFreshness boost (QDF) and short-lived real-time spikes.FreshnessTwiddler
04Theses0
No thesis touches this topic yet.