The Register: The Web as Historical Record - Essay by Peter Abrahams pointing out "one of the weaknesses of most search engines and the Web itself: you cannot sort by date."
The Register: Google, the Only Archive We'll Ever Need? - Opinion piece by Andrew Orlowski. Points out that Google can't always index, retrieve and/or sort everything in useful ways, but its supporters are overlooking these major drawbacks to using it as an archive.
First Monday: Internet Time and the Reliability of Search Engines - Journal article by Paul Wouters, Iina Hellsten, and Loet Leydesdorff. Examines the consequences and implications of internet search engines continuously reconstructing the past by updating their indices.