As somebody living on the edge and using aggressive marketing John Chow wisely tried to diversify his money making strategy so that his site wasn’t relying on Google.
Unfortunately most sites rely on Google a hell of a lot more than people think. In Johns August income report over $2000 was from selling links via Text Link Ads. What happens at the next PR update when JohnChow.com goes to PR0 (as is the case on 10 datacenters today)? Will TLA keep John in the network?
Will people still work hard to get a link in the top commenters section if the blog is no longer a PR6?
Any site that sells links is risking not only the wrath of Google in terms of rankings but also in terms of PR. Like it or not Google controls the link selling industry and there is nothing we can do about it.