Disposable-Domains?

I received the article below, but it's hardly worth more than "press release" status. It's difficult to say what spammers do with their domains. No one has done an analysis of cost-to-purchase vs. profit-margins. In fact, from my own records 24-48 hours is about the most use spammers can make of open domains. Beyond that it must still be profitable to do this.

Any way here is that article, and it's link:

Spammers Moving To Disposable Domains
http://it.slashdot.org/story/10/07/14/1726241/Spammers-Moving-To-Disposable-Domains

tc