Response to Trent Batson's article on Google

After reading Trent Batson's response to 'Is Google Making us Stupid' I found his argument that the web is just a contemporary way of exchanging ideas interesting. In some cases I believe that his argument is correct for example it is valid when exchanging opinions. However, I have a problem when it comes to relying on it for facts. If you look at Wikipedia you do not know who the contributors are and if they have any credibility. When a book is published an author has to provide evidence that the facts contained in the book have some basis in credibility, not so on the web where no facts are required or checked.