By now many of you have been to archive.org to find information about a potentially adverse party. The 'wayback machine' component saves websites going back in some instances five or more years. I've talked about printing and/or downloading pages of a site you may need later. It's obviously important because a potential defendant may remove or change information needed later.
Yahoo.com now has in beta form "my web." It allows you to save in the exact form you found a website. I've been testing it a bit this past weekend. In essence it is a private version of the wayback machine. Take a look, it may work for you.