If you have ever lost writing, or web pages, or blogs when a site moved or shut down, you will want to know about this. There is a tool called The Way Back Machine (the web as it was).
It is available at http://www.archive.org/web/web.php
It archives, you guessed it, the web. You won't find everything, and I didn't find searching by subject or keywords worked too well, but I found things back from 1998! It works the best if you know the old web address. Your lost pages might be there! Check it out.