Check out the Wayback Machine. You can check out older versions of almost any website out there. I was able to find past editions of my website, www.mrtechnique.com, that went all the way back to 2003. So, why would you need the Wayback Machine?
You may need a website redesign, and you want to pull information off your old website, but your website was taken down. If you don’t have a backup copy of your old website, you may be able to pull some of your old information by going to the Wayback Machine.