Everyone has some sort of webhost you can report spam to and they'll slap the organization (most webhost will drop a customer for repeated spamming), but it appears eetimes does its own hosting. Everyone pays someone for bandwidth to connect to others, but it appears these clowns connect through qwest.net, which I recall from years ago as being uu.net, notorious for ignoring spam complaints about the people they sell bandwidth to. So that method doesn't look like it would do anything in this case.
Here's an idea, generate a new, 'virgin' account and 'ubsubscribe' it, and see how long it takes for the spam to show up. I see you have gmail, you can do your own invites.
Read up on the CAN SPAM act, while it doesn't slow down the intentionally criminal spammers, perhaps there's something in it that will stop such a "mainslease" spammer. It may get their attention if a government official notifies them that they're violating federal law (IIRC CAN SPAM requires a WORKING 'remove' mechanism).