Google has begun rolling out a broad core update, the first of the current cycle, and says the process will take up to three weeks to finish. Early tracking suggests the largest movement is in publisher, review and comparison categories.
What is changing
Core updates do not target individual sites. They adjust how the ranking systems weigh overall helpfulness, so pages can rise or fall without any change of their own.
Who is affected most
Sites with thin, repetitive or heavily templated pages are reporting the sharpest declines, while pages with clear first-hand expertise are holding steady.
What to do now
Wait for the rollout to complete before making structural changes. Compare landing pages that lost visibility against those that held, and look for differences in depth, originality and internal linking.
