>>resolu+(OP)
What also worries me a bit is that Wikipedia started to use them in their references, to archive paywalled references.
Generally I enjoy archive.today very much, but it seems to be a labour of love which can go away any moment (despite its apparent resiliency), rather than something for the ages...
>>not_yo+7g
Wikipedia does not require that references be free to access. Most books, journals and physical newspapers fall into this category. So editors are perfectly entitled to reference paywalled articles. The fact that you can access some of these through Archive.today is really just a nice bonus. I am a bit concerned about the possibility that the service might just vanish someday, but I don't think that's a reason not to use it.