I created this site because I think it ought to exist. The shifting homepages of major media sites should be saved so they can be studied. Done right, I believe PastPages could serve as a resource for scholars seeking to study coverage of news events, like the upcoming U.S. presidential election.
Regularly collecting the data costs money. So I've organized a Kickstarter in hopes of raising funds to keep it up. http://www.kickstarter.com/projects/651552740/keep-pastpages-alive