This gives me pause. Does it you?
I was trying to access a designer-oriented website called Computerlove. It was down. (Various programming errors.) For the heck of it, I Googled the site to double-check the URL. Yup - still down when I clicked through from Google.
Then I succumbed to the urge of simply looking at the Cached page on Google. Google had a fresh page from only a couple of hours previously!
Does the fact that Google has a copy of all the content they crawl -- all your content that is as current as this strike any of you as slightly troubling?