There is nothing like the smell of napalm and burning spammers in the morning :)
I have banned them all and hopefully also removed all of their spam.
Sadly the somewhat ancient version of vBulletin running this forum has limited means to change the registration process. I might try to update it to the most recent versio (which is much better) but since I know that they changed the whole CSS layout stuff I'm somewhat afraid of the time required to do so (I'm very busy until the 15th of May with out OpenSAGA go live at
http://www.opensaga.org).
Thanks for reporting all the spammers!
Thomas