"Pages that were changed or deleted prior to the last crawl are lost forever." I used to serve some pages off my laptop quite a few months ago. I see that today all the same pages are still cached in Google site search results. Does it keep them forever? That could be cool, especially if I get AdSense income from that...
I don't think Google cache the pages forever since cache is updated over time after repeated crawling visits. However your pages may remain relatively forever in the WayBackMachine, www.archive.org Alexa should crawl your site first, though
omg I can't believe I found mini fragments my old WWF Site from over nearly 8 years ago cached from that Internet Archive site lol That's a cool link