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the link and you'll transported to The Wayback Machine to see if older copies for the page/URL you're viewing have been archived.
This Year's Premier Digital Marketing Event is #CZLSF
ClickZ Live San Francisco (Aug 11-14) will bring together the industry's leading online marketing practitioners to deliver 4 days of educational sessions and training workshops. From Data-Driven Marketing to Social, Mobile, Display, Search and Email, the comprehensive agenda will help you maximize your marketing efforts and ROI. Register today!