A social feed became a historical record

In 2010, the Library of Congress announced an agreement to preserve Twitter’s public posts. The idea was to capture a kind of evidence traditional archives rarely had: not just official statements, but the reactions and conversations unfolding around them. A post about a major event could sit alongside thousands of ordinary responses, showing how public attention moved in real time.

That record is more than a pile of text. Posts can include timestamps, account information, and links to other posts, giving researchers clues about when a conversation happened and how it spread. But a tweet’s meaning can also depend on a linked page, an image, or a reply that may no longer be available. Preserving the post does not necessarily preserve the whole online experience around it.

Saving posts is not the same as opening an archive

The project also faced a problem familiar to digital archivists: social media grows quickly, and a stream of posts is difficult to store, organize, and make useful for research. The Library later shifted toward collecting tweets selectively rather than trying to preserve every new public post. Its acquisition was not a public search engine where anyone could look up every archived tweet.

That distinction matters. The archive’s value lies in keeping a record available for future research, even when the original platform changes or a post disappears from everyday view. It does not mean every post is permanently accessible to everyone—or that a preserved tweet carries all the context that once surrounded it.