CircleID

Consider the Spam Balloon: Knowing that a minority of companies control most of the sites advertised in spam helps put the junk email problem into better perspective. To illustrate this consider a typical spam campaign. The emails are generated by tens of thousands of malware compromised machines and networks on the Internet. They send millions of spam messages to millions of victims. Sounds like a big problem, right? Not exactly. Because the number of actual websites advertised in those millions of messages is rather small in comparison the derivative of a spam campaign is seriously reduced. Reducing the true size even further is the fact that these real websites are held by one or maybe two registrar companies per campaign. Imagine that a spam campaign is a balloon. A balloon is actually made of a very small amount of real material, it only appears bigger because it's full of hot air. The huge volume of sent spam messages is the hot air that pushes the boundaries the Internet's resources, making the problem look bigger than it is. However, the air only stays in the balloon because it is knotted at the bottom. The registrars are this knot.

Graphic here:
http://www.knujon.com/news.html#05202008