Google又推出了实时搜索。是真的挺实时，几十秒，一两分钟的结果都会不断在页面上自动刷新。现在就能在search option(百宝箱)里看到这个实时搜索，或通过这个链接http://www.google.com/search?q=seo&hl=en&tbo=1&newwindow=1&output=search&tbs=rltm:1

　　在英文版下打开Show options...，再选择Latest，就可以开启实时搜索。

　　如果哪天实时搜索整合进普通搜索页面，对SEO的影响也值得观察。不过，应该没有个性化搜索那样对SEO有整体和深远的影响。

　　每天处理10亿以上页面。不光是twitter上的内容，还有新闻稿，博客等等。欢迎所有实时资源

　　目前只支持英文。2010年第一季度更多语种。

　　相关性也很重要。算法与普通页面排名算法稍有不同，但原则相同。

　　也许以后会提供API接口，有实时内容的网站可以提交给Google。只是可能。

　　PR的作用只是200多个因素之一。PR代表权威度，在实时更新领域，还有类似信号，如retweet, 回复等。

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