We've all experienced link rot, even if we don't know it by that name. Link rot is the phenomenon by which URLs deteriorate and lead to 404 error messages instead of the desired content, and it is plaguing legal citations.
For example, nearly 75 percent of links in the Harvard Law Review and over 50 percent of links in U.S. Supreme Court decisions are rotten. The materials relied on by authors and justices in making their legal arguments are vanishing. Perma.cc can help us fix this.