In 2010, the Library of Congress started archiving every single public tweet that was published on Twitter, but that practice will end next year. Going forward, the LOC will only archive tweets that are considered significant.



Effective Jan. 1, 2018, the Library will acquire tweets on a selective basis — similar to our collections of web sites. The Library regularly reviews its collections practices to account for environmental shifts, diversity of collections and topics, cost effectiveness, use of collections and other factors. This change results from such a review.

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Source: [H]ardOCP – The Library of Congress Will No Longer Archive Every Tweet