The ultimate goal of search engine spiders and robots is to compile a comprehensive and valuable database that can deliver the most relevant results to the search queries of visitors.

最终的目标搜索引擎的蜘蛛机器人是编纂一部全面而有价值的数据库，能够兑现最相关的结果，对搜索的访客。

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With actions, Facebook becomes the keeper of the keys to the most valuable database of consumer activity in history.

FORBES: Facebook May, Finally, Have Gone Too Far