Automattic and the Internet Archive have released a free, open-source WordPress plugin that automatically detects broken outbound links on a site and redirects visitors to archived Wayback Machine copies instead of serving them a 404 error
"We left all that stuff out [of Unix]. If there's an error, we have this routine called panic, and when it is called, the machine crashes, and you holler down the hall, 'Hey, reboot it.'"
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