**Some webpages are immortal, but most are ephemeral. **
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**Some webpages are immortal, but most are ephemeral. **
We report on our study of 27M webpages archived by @waybackmachine. We sampled from 25 years of data from the Wayback Machine, collecting about 1M URLs that were first archived in each year between 1996-2021. Then we re-crawled them in 2023.
**Authors:** Kritika Garg, @sawood, Dietrich Ayala, @weiglemc, and Michael L. Nelson
Study supported by #FilecoinFoundation and @internetarchive
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