Change and digital decay
The problems of preserving digital materials are acute and worrying; David Rosenthal considers them in his blog.
Google Books: how does it work?
A modified searching algorithm has been introduced for Google Books, that takes account of one hundred predictive indicators of “title” relevance.
Displaying and linking search results
Pearltrees (http://www.pearltrees.com) offers an attractive way of mapping sites and creating links between sites that you use and wish to pass on to others.