Panda targeted low-quality and thin content, along with websites with excessive ads and poor user experiences. It aimed to reward high-quality websites with better rankings while penalizing content farms and spammy sites.
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Penguin targeted spammy link-building practices. It penalized websites with unnatural, low-quality, or manipulative backlinks. Clean link profiles became essential for SEO success.
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Hummingbird marked a shift in Google's algorithm, focusing on semantic search and understanding user intent. It improved the context in which keywords were considered, making search results more relevant.
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RankBrain is a machine-learning component of the algorithm. It helps Google understand the meaning behind search queries and serves more accurate results based on user intent.
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BERT (Bidirectional Encoder Representations from Transformers) enhances Google's understanding of the context of words in search queries. It enables the algorithm to comprehend the nuances of language better, delivering more relevant results.
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