That's a great post and I think it's a sign that more and more people are starting to realize that the current publishing model is a dinosaur from the 19th century. If the current dynamic on PLoS One continues, very soon there will be a critical mass pushing for serious publishing reform. Cameron is one of the growing number of people who are connecting the dots and plotting the trend of future scientific publishing. It's begun! Behold the age of journals going extinct.
Thanks, Bill, for the mention.
Disclaimer: I've published in Science and PLoS One. I volunteer as academic editor for PLoS One.

P.S.: I'll write a post linking to this one as soon as I get back from the FENS conference I'm currently attending in Geneva, Switzerland.