http://www.pcmag.com/article2/0,1759,1666908,00.asp

Yet another bad guy out there, and this one eats Win XP SP2 F/W ...........

Top Threat: W32/Bagz-mm
Discovered on Oct 4, W32/Bagz-mm, spreads using a single- or double-extension executable e-mail attachment, The virus harvests e-mail addresses and uses its own SMTP engine to send copies of itself. Bagz also disables the Windows firewall, and installs its own network driver to bypass third-party firewalls. It also installs a back door and can download files from remote hosts.
I've just spent a couple of days removing W32/Blaster from several school laptops.
Is the W32/ front end an indication that it is a generic adaption of same ?

Or do they pull these names out of a hat ?