You do your Google Search, here are the links.
You click on a link (well, if you are a Firefox user you right/click and choose “Open In Tab”) and receive that dreaded “404” or “503” page error.
And it looked so promising and all …
Return to the page of found links.
Look Closely at the end of the link you sought.
If you see “cached”, click there.
You’ll receive a copy of the page from one of Google's millions of servers, a copy of the page as it was the last time Google saw it.
The page might have been moved or deleted by the owner.
But Google still has a copy!