"Last week's bust of the largest spam operation in the world has had no measurable impact on global spam volumes. The spam gang, known by authorities and security experts as HerbalKing, was responsible for one-third of all spam, the non-profit antispam research group Spamhaus said."

The article speculates that the operators of HerbalKing simply passed on to associates the keys to the automated, 35,000-strong botnet, and the spam flow didn't miss a beat.