(NEWSER) – The Washington Post has the latest document leak from Edward Snowden, revealing that the NSA has been collecting hundreds of millions of contact lists from email, social media, and IM accounts around the world—including those of Americans. The agency then uses those lists to uncover and map connections and relationships between with its targets. In one day last year, it harvested 444,743 email address books from Yahoo, 105,068 from Hotmail, 82,857 from Facebook, 33,697 from Gmail and 22,881 from other sources, according to an NSA document. Those are described as typical numbers, which puts the annual total of lists collected at more than 250 million.

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