因为任何人都可以随意地建立标记，所以经过一段时间后，在搜索集合中无法防止无关标记或错误标记的出现。
Since tagging can be done freely by anybody, nothing prevents irrelevant tags or tagging errors from accumulating slowly in search collections over time.
就错误页面来说，在搜索引擎的本地知识库中，它可能被链接到一个有效的URL。
In the case of an error page, it may be linked to a valid URL in the search engine local repository.
没有太多的人会注意搜索索引和新闻聚合器中的缺陷，或者因此而烦恼，但是当涉及到他们在拍卖中支付的钱时，大多数人会立即注意到错误。
Not too many people will notice or be upset by a flaw in a search index or a news aggregator, but most people will immediately notice an error when it comes to money they had bid with in an auction.
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