Former Intel chief Andy Grove famously believed that "only the paranoid survive" in Silicon Valley business. Co-founders Sergey Brin and Larry Page seem intent to inject this spirit back into fat, dominant Google. They're even worrying about Bing.

"They do this about once a year," Google's nonchalant CEO said of the Microsoft search engine last week. It seemed like he protested too much, and no wonder: Brin is "rattled" by Bing and is personally leading a "team of search-engine specialists in an effort to determine how Bing's crucial search algorithm differs from" Google's, reports the New York Post.

Meanwhile, co-founder Page says he's been prodding his skeptical search team to become more competitive with Twitter (see video below). After layoffs and belt-tightening, it would seem Google is embracing a certain spirit of insecurity, at least at the top. The company should hope this filters down to its more entitled troops; canceling that Disneyland trip is looking like a step in the right direction.

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