Developer and HackerNews contributor Jeremy Keeshin has stumbled across the scariest thing I've seen all day (I live in San Francisco, okay). In searching for ways to make his own site search auto-complete superfast, like Facebook's, Keeshin came across a file titled first_degree.php, which revealed that Facebook has a ranking for the people that you're probably searching for on Facebook. Keeshin guesses that the ranking algorithm is likely based on stuff like whose profile you look at, who you [...]

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