I like that the internet archive exists, but I don't like how they implement their opt-out policy. Sites can opt-out at any time, which I suppose is the correct thing to allow, but once they opt out then everything the Archive has gathered up to that point also goes away, which seems wrong.
I got frustrated with this one time when I tried to look up a defunct website in the Wayback Machine. The website was gone, but had been replaced by a domain squatter with a restrictive robots.txt. Because of the new roboots.txt, all of the old site was retroactively made unavailable. As time passes and more websites change hands, it would be a nice compromise if the default behavior was only to make retroactive dele…
https://blog.archive.org/2017/04/17/robots-txt-meant-for-sea...
https://archive.org/post/184024/robotstxt-policy-is-a-failur...