And who reads archived information? I have been using internet since 2001 and I can not remember any archive site where I was looking for information. If search engine sent me there, I read one or two lines then closed the window. No one spend time in a graveyard.
I do actually, quite a bit... its important in my line of work, which is more-or-less verifying authenticity of claims. And I don't think search engines crawl archives.