We suggest/encourage people link to original URLs but ALSO (as opposed to instead of) provide Wayback Machine URLs so that if/when the original URLs go bad (link rot) the archive URL is available, or to give people a way to compare the content associated with a given URL over time (content drift)
BTW, we archive all outlinks from all Wikipedia articles from all Wikipedia sites, in near-real-time... so that we are able to fix them if/when they break. We have rescued more than 10 million so far from more than 30 Wikipedia sites. We are now working to have Wayback Machine URLs added IN ADDITION to Live Web links when any new outlinks are added... so that those references are "born archived" and inherently persistent.
Note, I manage the Wayback Machine team at the Internet Archive. We appreciate all your support, advice, suggestions and requests.
BTW, we archive all outlinks from all Wikipedia articles from all Wikipedia sites, in near-real-time... so that we are able to fix them if/when they break. We have rescued more than 10 million so far from more than 30 Wikipedia sites. We are now working to have Wayback Machine URLs added IN ADDITION to Live Web links when any new outlinks are added... so that those references are "born archived" and inherently persistent.
Note, I manage the Wayback Machine team at the Internet Archive. We appreciate all your support, advice, suggestions and requests.