It's often said that text is the food of search engines, it's what Google, Yahoo! And Bing use to rank websites.

人们常常说，文字是搜索引擎的食物，它就是谷歌，雅虎和兵来排名的网站。

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In addition, much of the content that people post on Tumblr from fashion and art to food and travel doesn't overlap with what's on Yahoo, which is strong in categories like sports, finance and news.

WSJ: Hazards of the Buzzy Startup in Light of Tumblr Buy