Not sure if this is a general remonstrance about Google not caring about permanent URLs (pURLs) or a very specific reference: In Knitting for beginners, 3rd edition (Imagine Publishing, 2015), the basic knitting techniques have a link to accompanying video demonstrations on Youtube, and they used Google's link shortener. Of course they cover the purl stitch, but the pURL for the purl video will now be broken by Google. For anyone googling this in the future, here's the redirect: