Six botnets churning out 85 percent of all spam - Ars Technica

Been interested in botnets since Storm (and it's sneaky ways) came on the scene. But things have changed a lot since those days...

Srizbi is not alone in the post-Storm botnet world. Marshal estimates that six botnets account for 85 percent of the total spam sent world-wide. Srizbi is currently in the lead, with 39 percent of the "market," followed by Rustock at 20 percent, Mega-D at 11 percent, Hacktool.Spammer at seven percent, Pushdo (6 percent), and Storm (two percent).
Poor Storm