There have been a number of stories recently about how Google's famed "PageRank" system is in less and less use at the company these days. Still, that doesn't mean the concept isn't being used elsewhere. Last year we wrote about how some researchers were using it to better understand how brains work in a way that could be useful for artificial intelligence work. And, now, there's a report saying that researchers are using the concept of PageRank to try to stem staph infections at hospitals. Google's founders have been known to dabble in a variety of other interests beyond search -- perhaps they should be leading the charge to apply PageRank to other arenas.

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