If you think spam is about selling the products being advertised, in most cases you’d be wrong. The real spam business is very different.
I’m in Crikey today with a Crikey Clarifier: What is spam and where does it come from? Amongst other things, I point out:
An estimated 94% of all email is spam: over 100 billion messages every day. Some of that is advertising by businesses who don’t realise it’s wrong or, imagining a sudden surge of business, don’t care.
But over 80% of spam is sent by fewer than 200 people using networks of “borrowed” computers called botnets. These zombie computers have been infected with a virus or Trojan horse that hands control of the computer to the bad guys.
It’s free for all to read.