The Chesapeake Digital Preservation Group is releasing the results of its fourth annual analysis of link rot among the original URLs for law- and policy-related materials published to the Web and archived by the Chesapeake Group. The analysis also explores the prevalence of link rot among top-level domains.
this study, the term "link rot" is used to describe a URL that no
longer provides direct access to files matching the content originally
harvested from the URL and currently preserved in the Chesapeake
Group's digital archive. In some instances, a 404 or "not found"
message indicates link rot at a URL. In other cases, the URL may direct
to a site hosted by the original publishing organization or entity,
but the specific resource has been removed or relocated from the
original or previous URL.
Ernster, the Virtual Library Cat
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