Terence Tao has given a talk on “Mathematical Research and the Internet” here is a link to a post about the talk which includes an advance copy of the talk:

http://terrytao.wordpress.com/2009/08/27/mathematical-research-and-the-internet/

Let me update this. The above now has an updated version of the talk and there are more talks up see:

http://terrytao.wordpress.com/2009/08/31/more-mahler-lectures/

and also:

http://terrytao.wordpress.com/2009/09/03/the-cosmic-distance-ladder-2/