Authors increasingly cite webpages and other digital objects on the Internet which can “disappear” overnight. In one study published in the journal Science 13 of Internet references in scholarly articles were inactive after only 27 months. Another problem is that cited webpages may change so that readers see something different than what the citing author saw. The problem of unstable webcitations and the lack of routine digital preservation of cited digital objects has been referred to as an issue “calling for an immediate response” by publishers and authors 1 .
I frequently ran into this problem back when I was in college, happy to see that someone else saw it as an issue and has made a site to solve the problem!