Terence Tao has a prominent blog on mathematics. Yesterday’s post encapsulates his observations on the influence of internet-based technology on all aspects of the academic profession from his perspective of a well-respected mathematician who is about to give a speech to the American Academy of Arts and Sciences. In fact, the post by Tao contains a draft of this speech. I highly recommend it.
Mathematician Terence Tao on the influence of the Web on academia
The curious incident of DD on the Web 