“My firm belief is that the net effect of the Web 2.0 movement will be a marked loss of privacy on the internet, one which leads to big business knowing more about you than it ever did before. This is why.”
(I don’t have anything inherently against “Web 2.0”. I do have a problem with most types of modern marketing though, and “Web 2.0” is guilty of that by default (it is marketing), and for the reasons this chap outlines in this article.)