Chris Pirillo posted today about The Myth of the Press Pass: Busted. Although not exactly on the same topic, I'd argue that the value of the pro-photographer is declining.
I would bet money that it never even crossed Chris' mind to hire a conference photographer for Gnomedex. In fact his opening remarks included something to the effect of “expect to be photographed and those pictures to end up on Flickr”. He also cautioned attendees not to take pictures of any of the children that were floating around.
With pictures like these, who needs pro?