Interesting - wordpress.org has been publishing spammy articles to help pay the bills.
This sounds dangerous; Matt runs the risk of getting his site banned from Google. I wonder how much money was involved?
That said, I recently been thinking that real bloggers (i.e. people whose primary intention is to blog, not to spam) could put up a pretty good showing against the comment spammer types if they did their own doorway pages to viagra sellers.
The issue is whether the search engines would look on it as legitimate or not.
Another thought: it's against Google's interest to shut down all the spammers -- I bet they account for a decent proportion of AdWords revenue.