The New York Times article on PR and the Michael Arrington response have been a must read among PR people. I find Richard Edelman’s post the one that most clearly identifies some of the misconceptions our profession battles with.
One additional thought I’d add is that many people in Silicon Valley and in the social media space believe PR is one-dimensional: they define it as media relations. PR is not a “one-hit wonder”. It does not stand for “press release”. We build brands, enhance and protect the reputation of our clients and are here to stay. To use a music analogy, we are the Bruce Springsteen of the communications world. Not Right Said Fred.
Media Relations Myths