Topic web crawler search strategy is the core of professional search engine technology.

主题网络蜘蛛搜索策略是专业搜索引擎的核心技术。

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Jon Hein, the creator of the Jumptheshark.com Web site -- which charts the rise and fall of TV shows and other pop culture -- says "The Simpsons" is by far the most popular topic on his Web site, and there have been rumblings that the show has leaped the fish, or at least started turning into chum.

CNN: A milestone for 'The Simpsons'

Google also likely will make blog content searchable by topic, thereby driving more Web traffic to Google's traditional search site.

FORBES: Magazine Article

Each cluster features a CNN article surrounded by links to stories on the same topic from elsewhere on the web.

FORBES: CNN Launches Zite-Powered Aggregation Pages