Some thoughts on personalization - Google ungewohnt ausführlich über die eigenen Motivationen zur Personalisierung der Suchergebnisse.
Personalization is a narrow class of context. It’s the context of you, the searcher, including your interests and your network of contacts. This special kind of context has a subtle, but important, impact on search results. Personalization is understanding who you are to give you the best answers, and is definitely not about making search results look like your reflection in a mirror.
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