Editor's note: The spam data cited in this post is drawn from the network of Google email security and archiving services, powered by Postini, which processes more than 3 billion email messages per day in the course of providing email security to more than 50,000 businesses and 18 million business users. Spam and virus volumes this year have continued their upward trend. Q2'10 has seen a sharp 16% increase in spam volume over Q1'10.