It appears that Yahoo has joined Gigablast and Clusty and is now providing direct links to "archived" versions of pages via The Internet Archive's Wayback Machine. You'll find a direct link to check to see if older versions of the page are available in the box at the top of every page that Yahoo caches. Look for the text link that reads, "check for previous versions at the Internet Archive." Click the link and you'll transported to The Wayback Machine to see if older copies for the page/URL you're viewing have been archived.
The Original Search Marketing Event is Back!
SES Denver (Oct 16) offers an intense day of learning all the critical aspects of search engine optimization (SEO) and paid search advertising (PPC). The mission of SES remains the same as it did from the start - to help you master being found on search engines. Early Bird rates available through Sept 12. Register today!