Global spam e-mail levels suddenly fall
bbc.co.uk
bbc.co.uk
For reference, I admin a mail server for a small charitable organisation, and our mail graph for the last year looks like this:
http://dl.dropbox.com/u/4957647/mailstats/mail.png
http://dl.dropbox.com/u/4957647/mailstats/rejected.png
Where the grey is spam filtered by spamassassin and the red is obviously spam rejected outright due to an invalid recipient or an impossible sender or whatever.
The previous year's trend looked sort of similar - I think 2007 or 2008 was the peak in terms of spam we receive and it's been declining on average since then.
SEO Spam creates value. Unfortunately, it also degrades value for a great many others. There is opportunity here. Google or some other search engine needs to figure out how to capture the value in SEO spam. (Perhaps by finding a way to identify "original pages" like those on StackOverflow and then act to enforce their terms of service?)
By this same logic, you can justify the heroin trade, the slave trade, and the child pornography trade.
Meh - spam email has too many legal headaches. I'm sure you can make money doing it, but I tend to think it's a bit more trouble than it's worth.